ENERGY & FUELS
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2023
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IF 5.3
Yanlin Liu,Jiren Tang,Yunzhong Jia,Yiyu Lu,Chenqing Shang,Rongrong Tian,Xiao Sun,Qi Cheng,Guilin Zhao
The surface wettability and morphology of shale may both be modified by SiO2 nanofluid (SNF), directly influencing the capillary force and CO2 geo-storage. However, the literature requires more information and studies with respect to nanoparticles’ effect on shale surface at reservoir conditions of high pressure and temperature. Here, we investigate the stability of nanoparticle layers formed by SNF on Longmaxi (marine) and Yanchang (continental) shale in ScCO2 and nanoparticles’ efficiency of wettability reversal at different nanofluid aging times and concentrations. Besides, low-pressure nitrogen gas adsorption (LP-NA) was performed to evaluate the effect of nanoparticles on shale pore structures after ScCO2 exposure. Results indicate that the nanoparticle structure could be stable in ScCO2 and render the wettability of shale samples to be more hydrophilic, while the quartz-rich Longmaxi shale surface shows a denser nanostructure than the clay-rich Yanchang shale surface does and presents a stronger water wettability. More micropores are transformed into mesopores or macropores for ScCO2- and SNF-treated Longmaxi samples than solely ScCO2 samples, but the pore structure parameters show trivial alteration in Yanchang samples after SNF treatment. The difference in the capillary force recovery between Longmaxi (recovered by 660.5%) and Yanchang (recovered by 500.6%) shale implies that silica nanofluid may be more suitable for Longmaxi formation in the CGS application.
研究领域:
石油工程
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碳捕集与封存（CCS）
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能源纳米技术
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储层地质学
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界面科学
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DOI
高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Ziyi Yuan,Zhihong Lin,Kejing Li,Jian Li,Viatcheslav Freger,Xuezhong He
Polymers of intrinsic microporosity (PIMs) are promising membrane materials for CO2 separation due to their high permeability; however, their limited CO2/N2 selectivity restricts practical application. Herein, mixed-matrix membranes (MMMs) were fabricated by incorporating a CO2-molecularly imprinted UiO-66-NH2 filler (MIP@U) into amidoxime-functionalized PIM-1 (AOPIM-1), followed by thermal treatment at 160 or 250 °C under vacuum to regulate the membrane microstructure. Spectroscopic and porosity analyses (FTIR, XRD, and N2 physisorption) show that thermal treatment at 160 °C promoted oxadiazole-ring formation, leading to enhanced subnanometer microporosity and improved CO2/N2 selectivity. In contrast, treatment at 250 °C partially regenerates nitrile groups and generates larger micropores, resulting in higher CO2 permeability but reduced selectivity. The MIP@U filler introduces CO2-recognition cavities and improves interfacial compatibility, enabling synergistic control of polymer microporosity and interfacial transport pathways. The optimized 3 wt % MIP@U/AOPIM-1-TR160 membrane achieves a CO2 permeability of ∼1600 Barrer and a CO2/N2 selectivity of 50.8. The membrane also demonstrates stable performance under pressures up to 12 bar and during 30 h of continuous operation at 2 bar. This study highlights a dual-approach strategy combining thermally tailored PIM chemistry with molecularly imprinted MOF fillers for designing high-performance MMMs for CO2 capture.
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DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2023
·
IF 6.1
Xinfu Zhao,Yihao Nie,Xibin Yi,Shimo Yu,Jing Zhang,Xiaochan Liu,Zhipeng Yuan,Sijia Liu,Jian Zhang,Guoliang Dou,Mengdi Wang
Design of efficient CO 2 adsorbent is an effective way to capture CO 2 . Bamboo-derived activated carbon is a promising CO 2 adsorbent. Inspired by this, carbonized unidirectional polyimide (CUPI) aerogels were newly designed by the ice templating method using directional freezing technology. The pore property of CUPI aerogel can be tuned by changing the solidification velocity, and a series of CUPI aerogels were designed to explore the CO 2 capture performance in view of pore morphology/topology. As a result, the obtained CUPI-8 exhibits higher CO 2 adsorption capacity compared to carbonized polyimide aerogels due to the synergistic effect of micropores and lamellar pores. Specially, the CO 2 adsorption capacity over CUPI-8 can be up to 5.75 mmol/g at 20 bar and 298 K. Furthermore, the adsorption isotherm of CUPI-8 still shows an upward trend even nearly 20 bar. The isosteric adsorption heat (Q st ) value of CUPI-8 is nearly in the ideal scope of 30–50 kJ mol −1 . The efficient CO 2 adsorption performance and good chemical stability of CUPI aerogel makes it a promising absorbent for practical application. This work provides a new opportunity for researching the effect of pore morphology/topology and the synergistic effect of hierarchical pores on CO 2 capture.
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高影响因子
ENERGY
·
2022
·
IF 8.857
Heping Xie,Hailong Liao,Shuo Zhai,Tao Liu,Yifan Wu,Fuhuan Wang,Junbiao Li,Yuan Zhang,Bin Chen
Using aqueous Zn–CO 2 batteries to store renewable energy and produce valuable chemicals using CO 2 as the source is a promising method for CO 2 mitigation, that is alternative to traditional energy-costing CO 2 capture/storage technologies. However, the lack of efficient CO 2 -reduction catalysts significantly hinders the efficiency of such batteries. In this study, an efficient perovskite cathode, Pd-doped La 2 CuO 4 , was successfully developed for the cathodic CO 2 reduction reaction (CO 2 RR), and the optimal doping ratio of La 2 Cu 1-x Pd x O 4 ( x = 0.05) was determined. Compared with the pristine La 2 CuO 4 catalyst, the current density for the CO 2 RR in the H-cell and the Faraday efficiency of CO production are both increased by ∼50% when operated −1.0 V (vs RHE). As a result, the peak power density of a Zn–CO 2 battery using the Pd-doped La 2 CuO 4 catalyst reached 0.75 mW cm −2 at 2.23 mA cm −2 by an enhancement ratio of 25%. Density functional theory calculations revealed that the *CO desorption processes on the cathode were enhanced owing to Pd doping, which accounted for the enhanced CO 2 RR activity and selectivity. The findings of this study show the potential application of perovskite catalysts in the cathode of Zn–CO 2 batteries and provide an effective method for battery performance enhancement via the facile Pd doping.
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DOI
高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 12
·6745-6758
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IF 6.123
Zhang Jinyang,Mi Shu,Liu Fei,Qiao Qian,Na Haining,Zhu Jin
Organic solvents with low Henry's constants, such as propylene carbonate (PC) and sulfolane, were proposed to be used as CO 2 absorbents to increase CO 2 absorption capacity in the CO 2 switchable solvent, so that the dissolution of cellulose can be effectively enhanced. With the addition of PC, the maximum concentration achieved for the dissolution of paper cellulose can be largely increased from 1.0 to 5.0 wt%, while those for microcrystalline cellulose and corncob cellulose were increased from 5.0 to 10.0 and 7.0 wt%, respectively. Moreover, the chemical and crystalline structure of the regenerated cellulose was not affected by the addition of CO 2 absorbents. This study illustrated a simple and effective way to modify the CO 2 switchable solvent, which would be helpful for the application of the complex solvent system for the enhanced dissolution, derivatization, and processing of cellulose in the future.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Xuejian Liu,Junjie Ren,Daoyi Chen,Zhenyuan Yin
The continuously increasing CO 2 emissions since industrialization has sparked widespread concerns on environmental and climate change issues. Carbon sequestration and storage technologies (e.g., hydrate-based CO 2 sequestration) present promising potential for the disposing of excessive CO 2 in geological media. High gas uptake capacity and rapid CO 2 hydrate formation kinetics are required for the application of such a technology. In this study, we compared the kinetic promotion effects of sodium dodecyl sulfate (SDS) and L -methionine ( L -Met) on CO 2 hydrate with the objective of identification of an effective and eco-friendly CO 2 hydrate kinetic promoter. The experimental results suggested that L -Met (0.1 wt%) promotes CO 2 hydrates formation significantly with a gas uptake in CO 2 hydrate five times more than SDS at the same concentration. The hydrate morphology observations indicated that the wall-climbing hydrates associated with the addition of L -Met induced by the capillary driving force offer a possible explanation for the difference in the observed kinetics. A novel calculation method was developed to quantify the partition of CO 2 in gas, liquid and hydrate phases. Increasing the initial gas–liquid ratio promotes CO 2 stored in the hydrate phase as solid rather than in the liquid phase as dissolution. We further demonstrated the reusability of L -Met in five consecutive cycles of CO 2 hydrate formation and dissociation. It was assessed that L -Met as a CO 2 hydrate kinetic promoter is superior to SDS and can be employed as an efficient, reliable and eco-friendly kinetic promoter for the hydrate-based CO 2 sequestration technology.
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高影响因子
CHINESE JOURNAL OF CATALYSIS
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2023
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IF 16.5
Wenqian Yang,Ziqian Xue,Jun Yang,Jiahui Xian,Qinglin Liu,Yanan Fan,Kai Zheng,Peiqin Liao,Hui Su,Qinghua Liu,Guangqin Li,Cheng-Yong Su
The selective electrochemical reduction of CO 2 to CO is a promising solution for the design of carbon-neutral, sustainable processes. Achieving a highly selective single reduction product is still challenging because of the energetically favorable competing hydrogen evolution reaction. We report the fabrication of N-doped sponge-like porous graphitic carbon structures embedded with Fe nanoparticles (Fe@NPC) via the pre-modification of a metal-organic framework (IRMOF-3(Zn)) with carboxyferrocene, followed by pyrolysis . The as-prepared Fe@NPC exhibited a 96.4% CO Faradaic efficiency at –0.5 V RHE and good stability. The exceptional CO 2 reduction performance is attributed to the unique structure of the composite catalyst, which provides abundant hierarchical pores that increase CO 2 adsorption and mass transfer, and active Fe sites that synergistically accelerate the kinetics of CO generation. The in situ attenuated total reflectance-Fourier transform infrared analysis provided proof of the improved ability of Fe@NPC to accumulate the crucial intermediate *COOH compared with other pyrolyzed porous carbons. Fe@NPC was used in a Zn-CO 2 battery that delivered a maximum power density of 3.0 mW cm –2 , evidencing its potential for application in energy-converting devices.
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2023
·
IF 11.2
Wenkai Zhu,Meiling Chen,Jieun Jang,Minsu Han,Yeonggyun Moon,Junghwan Kim,Jungmok You,Song Li,Teahoon Park,Jeonghun Kim
Nanocellulose-based aerogels have been considered as one of the ideal candidates for CO 2 capture in practical applications owing to their lightweight and porous properties. Additionally, various adsorbents with amine groups have been widely used as effective CO 2 capture and storage strategies. Herein, amino-functionalized aerogels were prepared by sol-gel and freeze-drying methods using two typical nanocelluloses (cellulose nanofibrils (CNFs) and cellulose nanocrystals (CNCs)) as substrates. In addition, the reaction parameters for grafting and amino functionalization were optimized. The CNC and CNF aerogels could be easily modified by the hydrothermal growth of the amino group, and they exhibited attractive properties in terms of CO 2 adsorption, recyclability, thermal stability , hydrophobicity , and CO 2 /CH 4 mixture separation. The amino-functionalized CNF aerogel exhibited superior performance to the CNC aerogel, which was attributed to the increased cross-linking binding sites for hydrogen bonding in the CNF aerogel. The results of this study indicated that amino-functionalized nanocellulose aerogels can be considered a promising biodegradable, sustainable, and environmentally friendly material for CO 2 capture and removal of CO 2 from CH 4 .
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Liwei Sun,Ming Gao,Shaokun Tang
Design and synthesis of porous materials as efficient CO 2 adsorbents have attracted much attention to alleviate the environmental issues derived from CO 2 emission. Here a new amino acid-functionalized poly(ionic liquid) poly[1-(p-vinylbenzyl)-3-methylimidazolium glycinate] [P([VBMI][Gly])] was prepared with [VBMI][Cl] and P([VBMI][Cl]) as intermediate products. Chemical structures of the above materials are confirmed by NMR and FT-IR spectra. P([VBMI][Gly]) presents dense monolith with amorphous structure and high thermal stability. CO 2 adsorption capacity of P([VBMI][Gly]) is 104 mg CO 2 /g PIL. To further improve CO 2 adsorption performance, porous-P([VBMI][Gly]) was constructed via supercritical foaming technology for the first time. The effects of foaming conditions on the morphology and CO 2 adsorption performance of porous-P([VBMI][Gly]) were investigated. And porous-P([VBMI][Gly]) foamed at 110 °C, 30 MPa and 2 h presents uniform cell distribution and obvious porous structure. CO 2 adsorption capacity of porous-P([VBMI][Gly]) can reach up to 165 mg CO 2 /g PIL, which is significantly higher than that of pristine P([VBMI][Gly]). Compared with pristine P([VBMI][Gly]), the pore parameters of porous-P([VBMI][Gly]) are obviously improved, and the porosity and average pore diameter can reach 82.9% and 3 μm respectively. Its CO 2 adsorption capacity decreases by 25% after twelve-cycle adsorption–desorption experiments.
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高影响因子
ENERGY
·
2019
·
IF 5.537
Jie Yi,Dong-Liang Zhong,Jin Yan,Yi-Yu Lu
In the present work, we report an investigation of using an anionic surfactant sulfonated lignin (SL) to promote gas hydrate formation for CO 2 capture from a CO 2 /CH 4 gas mixture. The experiments were performed at 277.15 K in a stirred tank reactor. The initial overpressure (driving force) for hydrate formation was fixed at Δ P = 2.5 MPa. The impacts of the SL presence on hydrate growth behavior and CO 2 separation efficiency were elucidated. The results indicated that hydrate nucleation was prolonged in the presence of SL but this stage was accelerated when adding 1.0 mol% tetrahydrofuran (THF) into the SL solution. Compared to THF/SL and sodium dodecyl sulfate (SDS) solutions, CO 2 recovery obtained in SL solutions was increased to 63.5 ± 2.9% and the separation factor was 4.0 ± 0.8. Gas consumption obtained in SL solutions was higher than that obtained in other systems like liquid water, SDS solution, THF solution, and tetra- n -butyl phosphonium bromide (TBPB) solution. Therefore, sulfonated lignin can be used as a promising surfactant to improve hydrate formation kinetics as well as the efficiency of CO 2 capture from CO 2 /CH 4 gas mixture, but there still exists a space to increase the CO 2 selectivity in the presence of SL.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 31
·15064-15073
·
IF 9.931
Xu Jiang,Songwei Li,Shanshan He,Yongping Bai,Lu Shao
Both material choice and filler/organic interface are crucial in mixed matrix membranes (MMMs) for sub-nano-size gas separations and yet, the interface–performance relationship is still a subject of intense debate due to challenging interfacial detection. Herein, two UiO-66-type MOFs (amino-functionalized UiO-66-NH2 and isopropenyl-functionalized UiO-66-MA) are incorporated in cross-linked CO2–philic polyethylene oxide (PEO) matrix based on judicious material screening for CO2 capture. The reactive material UiO-66-MA is stitched together with methacrylate-capped PEO in situ during UV-induced copolymerization to generate highly efficient gas transport passages with conceivably good interfaces. Poor interface is observed by substituting UiO-66-MA with non-reactive UiO-66-NH2 in MPCM (MOF/polymer composite membrane). The interfacial conditions of CO2–philic MPCMs are carefully assessed via advanced physicochemical characterizations for clarifying the correlation between interface and separation performance. The reactive material UiO-66-MA containing MPCM with good interface demonstrates higher gas permeability (up to 1450 barrers) with similar selectivity (up to 45.8 for CO2/N2) when compared to non-reactive UiO-66-NH2 containing MPCM. The mixed gas test also shows high CO2 permeability of 1439 barrer and CO2/N2 selectivity of 37.6 in our MPCM. We also observe unexpected suppressed plasticization/swelling behaviour in UiO-66-MA containing MPCM and enhanced plasticization in UiO-66-NH2 containing MPCM through analysis of gas separation performance in the range of 1–10 atm, which might be utilized as a potential interface assessment tool for nanocomposites. Moreover, the performances of our CO2–philic MPCMs can be optimized further to surpass the (2008) Robeson Upper Bound for highly efficient sustainable CO2 capture.
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高影响因子
FUEL
·
2025
·
IF 7.5
Mingwei Zhao,Yuxin Xie,Xiangjuan Meng,Lin Li,Caili Dai,Zhihao Zhang,Zhenfeng Ma,Yingnan Wang,Zhongzheng Xu,Xuguang Song
Effectively reducing the miscible pressure of CO 2 -oil is a crucial measure to achieve CO 2 miscible flooding. Alkanes have been extensively studied to improve the miscibility of CO 2 and oil, but few studies have elucidated the potential mechanisms and principles of their effects. In this work, the effect of pentane as a typical alkane on the miscibility behavior between CO 2 and oil is clarified. The interfacial tension of CO 2 -oil was measured by the high temperature and high pressure interfacial tension tester. The minimum miscible pressure (MMP) was extrapolated by the vanishing interfacial tension method. Meanwhile, the physical parameters (solubility, density, etc.) of oil and CO 2 were measured by visual PVT instrument. Oil composition analysis and AFM morphological scanning explained the extraction effect of CO 2 on oil. Finally, pentane-enhanced CO 2 flooding recovery was evaluated by physical simulation device. Results indicated that introducing the pentane effectively reduces the interfacial tensions and MMP, achieving an impressive 10.42% MMP reduction. Moreover, the addition of pentane to CO 2 -oil significantly increases the solubility of CO 2 in oil and the volume expansion of oil. CO 2 primarily extracts oil components with carbon numbers below C 10 . As CO 2 enrichment progresses, the concentration of resin and asphaltene increases, proved by a more roughening of the surface deposition morphology. Pentane can improve the solubilization and extraction of oil by CO 2 , and increase the recovery of CO 2 flooding by 19.94 %. This study is expected to facilitate the efficient utilization of CO 2 miscible flooding and provide the theoretical and technical support for its practical implementation in oilfield.
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高影响因子
危险品化学品经营许可证（带存储）