FUEL
·
2022
·
IF 8.035
Xiayi Hu,Juntao Huang,Xinwei He,Qi Luo,Chao'en Li,Changbo Zhou,Rui Zhang
The challenge for the carbon dioxide (CO 2 ) capture by using amine solution is the huge energy cost in solvent regeneration process, this work combined the advantages of three conventional amines, monoethanolamine (MEA), 1-Dimethylamino-2-propanol (1DMA2P), and piperazine (PZ) to formulate an effective trio-amine blend to capture CO 2 , and the results demonstrate that the blends could reduce the energy consumption by 29.4–55.4%, increase the average desorption rate by 60–140%, and increase the cyclic capacity by 40–120%, relative to 5 M MEA solution. Through analysis the regeneration mechanism in detail, it is found that more proton provider in the trio-amine blends could help to reduce the energy consumption by lower the reaction activation energy in the deprotonation process of the protonated amines. Finally compared to the reported amine systems in considering of the energy cost, it is found that the MEA-1DMA2P-PZ could be a potential candidate for capturing CO 2 in industrial.
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高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Mengmeng Ni,Lihong Wang,Yao Chai,Bing Wang,Dongmiao Li,Jinni Shen,Zizhong Zhang,Xuxu Wang
The photocatalytic conversion of CO 2 and H 2 O into a series of value-added products is regarded as an important way to mimic natural photosynthesis for solar harvesting. Herein, we prepared CsBi 2 Ta 5 O 16 with a cubic pyrochlore structure via high-temperature molten salt method as a photocatalyst for the first time. The NiO-loaded CsBi 2 Ta 5 O 16 composites could efficiently photocatalyze the conversion of CO 2 into CH 4 and CO, and oxidize H 2 O to O 2 . With 10 wt% NiO loading, the highest yield of CH 4 (7.24 μmol g −1 h −1 ) and O 2 (3.59 μmol g −1 h −1 ) could be achieved. The adsorption and activation of CO 2 molecule on NiO can be attributed to the enhanced CO 2 photocatalytic conversion by the NiO-loaded CsBi 2 Ta 5 O 16 composites. This work provides a design idea of photocatalyst for the full reaction of CO 2 with H 2 O.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Kai Wu,Qing Ye,Lanyang Wang,Fanwei Meng,Hongxing Dai
The nanocomposites of graphene oxide (GO)-doped stearate-intercalated layered double oxides (LDO) as a new type of CO 2 adsorbents at medium temperatures (200–400 °C) are reported for the first time. The doping of GO could improve stability of the composite material. The CO 2 adsorption uptake (0.52 mmol/g) of LDO-Stearate (LDO-SA) was significantly increased by intercalating the long carbon chain organic anion of stearate. The 6 wt% GO − LDO-SA (6GO − LDO-SA) nanocomposite possessed the largest CO 2 adsorption uptake (0.83 mmol/g), which was much larger than that (0.35 mmol/g) of the conventional LDO adsorbent. Such a high performance of 6GO − LDO-SA was associated with its increase in surface area and basic site amount. The adsorption process of CO 2 on the nanocomposite was dominated by the chemical adsorption, and the adsorbed CO 2 was mainly stored in the form of carbonate. The regeneration efficiency of 6GO − LDO-SA was>88% after 10 adsorption and desorption recycling tests, which was much higher than that of LDO. Simultaneously, the 6GO − LDO-SA adsorbent exhibited a fast kinetics (0.863 mmol/(g·min)) under the medium-temperature conditions. We are sure that the new nanocomposite materials fabricated in the present study are promising in the applications of carbon dioxide capture.
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高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Lei Wang,Zhiting Zhang,Qi Han,Ying Liu,Junbo Zhong,Jiufu Chen,Jingwei Huang,Houde She,Qizhao Wang
Commercial TiO 2 (P25) is a potentially promising catalyst for photocatalytic CO 2 reduction. Nonetheless, the inefficient light capture ability and egregious charge recombination restrict its further utilization. In this work, CdS and P25 are incorporated to form the composite CdS-P25, which is further immobilized on the surface of a copper-based organic metal framework (MOF), ZIF-67, so as to establish a ternary hybrid CdS-P25/ZIF-67 via a facile hydrothermal method. On the basis of the enhancement in light absorption resulted from the formation of CdS-P25, the incorporation of ZIF-67 further prolongs the light absorption edge of CdS-P25/ZIF-67, up to 552 nm. In addition, the introduction of ZIF-67 with the dual Z-Scheme system constructed could significantly suppress the charge recombination, as revealed by the transient photocurrent value of CdS-P25/ZIF-67, which is 3.47 μA cm −2 , about 20.4 times than that of CdS-P25. Accordingly, the photocatalytic assessment of CdS-P25/ZIF-67 also presents a significantly amelioration in CO 2 reduction reaction (CO 2 RR) in comparison with either CdS-P25 or ZIF-67, giving 1.58 μmol h −1 CH 4 and 1.49 μmol h −1 CO production. Our work sheds light on the investigation of efficacious construction of P25 based hybrids for light-driven photocatalysis.
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高影响因子
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
·
2021
·Vol. 69
·期 2
·289-300
·
IF 1.967
Fu Liu,Weifang Zhu,Minmin Gou,Hengheng Cao,Ruili Guo
Two-dimensional flake Li 1.6 Mn 1.6 O 4 (LMO) was added to the Pebax®MH 1657 (Pebax) matrix to prepare mixed-matrix membranes (MMMs) for CO 2 /CH 4 mixed gas separation. The average pore diameter of the LMO nanosheet was about 10.79 nm: a fast CO 2 transport channel could be established in the membrane. In addition, the Li and oxygen defect site (O δ− ) in the LMO had an affinity for CO 2 , which improved the permeability of the membrane and the selectivity for CO 2 separation. Furthermore, the ultrathin structure of LMO with large aspect ratio was also conducive to gas separation. When the LMO filling amount was 2.0 wt%, the permeation rate of pure CO 2 gas of Pebax/LMO-2.0 membrane was 117.9 Barrer, and the CO 2 /CH 4 ideal selectivity was 18.74, which were 119.7 and 35.8% higher than Pebax membrane, respectively. The CO 2 /CH 4 mixed gas separation results of Pebax/LMO-2.0 membrane showed that the CO 2 permeability and CO 2 /CH 4 selectivity were 158.54 Barrer and 33.41, respectively, and were increased by 83.24 and 23.15%, compared with Pebax membrane.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 25
·67290-67302
·
IF 5.8
Chen Zewen,Zhi Yunfei,Li Wenlong,Li Shuangjiang,Liu Yi,Tang Xiaoning,Hu Tianding,Shi Lan,Shan Shaoyun
Nitrogen-rich organic polymer poly(chloride triazole) (PCTs) was synthesized by a one-step method as metal-halogen-free heterogeneous catalyst for the solvent-free CO 2 cycloaddition. PCTs had abundant nitrogen sites and hydrogen bond donors, exhibited great activity for the cycloaddition of CO 2 and epichlorohydrin, and achieved 99.6% yield of chloropropene carbonate under the conditions of 110 ℃, 6 h, and 0.5 MPa CO 2 . The activation of epoxides and CO 2 by hydrogen bond donor and nitrogen sites was further explained by density functional theory (DFT) calculations. In summary, this study showed that nitrogen-rich organic polymer is a versatile platform for CO 2 cycloaddition, and this paper provides a reference for the design of CO 2 cycloaddition catalysts. Graphical abstract
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PubMed
高影响因子
ENERGY
·
2023
·
IF 9
Xingxing Zhao,Yudong Ding,Lijiao Ma,Xun Zhu,Hong Wang,Min Cheng,Qiang Liao
Porous liquids (PLs) is a new material with two seemingly unrelated characteristics: porosity and liquidity. In this study, an amine functionalized strategy was proposed to enhance the CO 2 absorption of Type III Porous Liquids. 2-Methylimidazole zinc salt (ZIF-8) modified by tetraethylenepentamine (TEPA) was chosen for providing porosities and the 1-Ethyl-3-methylimidazolium Bis(trifluoro-methanesulfonyl)-imide ([EMlm][NTf 2 ]) was chosen as sterically hindered solvent, an amine-functionalized type Ⅲ porous liquids were reported. First, amine groups were successfully loaded on the ZIF-8. Then, the effect of amine loading on ZIF-8 was investigated. It was found the 30 TEPA@ZIF-8 nanoparticles were the optimum candidates based on CO 2 absorption capacity and micropore analysis. Subsequently, the CO 2 absorption capacity of absorbent was studied. 5-30TEPA@ZIF-8/[EMlm][NTf 2 ] had a CO 2 absorption capacity of 0.124 mmol g −1 , which was 4.43 times higher than 5-0TEPA@ZIF-8/[EMlm][NTf 2 ]. And the corresponding absorption rate increased by 745%. Three kinetics models were used for describing the absorption process, and the result showed the fractional-order kinetic model was the most accurate. Finally, the absorbent had a low heat absorption with a value of −1.38 kJ/mol. The CO 2 absorption capacity lost just 4.3% after five cycles. All the results indicate the prepared porous liquids had an application potential in CO 2 capture.
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高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Zhengrong Liu,Jun Zhou,Yueyue Sun,Xiangling Yue,Jiaming Yang,Lei Fu,Qinyuan Deng,Hongfei Zhao,Chaofan Yin,Kai Wu
Solid oxide electrolysis cell (SOEC) could be a potential technology to afford chemical storage of renewable electricity by converting water and carbon dioxide. In this work, we present the Ni-doped layered perovskite oxides, (La 4 Sr n −4 ) 0.9 Ti 0.9 n Ni 0.1 n O 3 n +2 with n = 5, 8, and 12 (LSTNn) for application as catalysts of CO 2 electrolysis with the exsolution of Ni nanoparticles through a simple in-situ growth method. It is found that the density, size, and distribution of exsolved Ni nanoparticles are determined by the number of n in LSTNn due to the different stack structures of TiO 6 octahedra along the c axis. The Ni doping in LSTNn significantly improved the electrochemical activity by increasing oxygen vacancies, and the Ni metallic nanoparticles afford much more active sites. The results show that LSTNn cathodes can successfully be manipulated the activity by controlling both the n number and Ni exsolution. Among these LSTNn (n = 5, 8, and 12), LSTN8 renders a higher activity for electrolysis of CO 2 with a current density of 1.50A cm −2 @2.0 V at 800 °C It is clear from these results that the number of n in (La 4 Sr n −4 ) 0.9 Ti 0.9 n Ni 0.1 n O 3 n +2 with Ni-doping is a key factor in controlling the electrochemical performance and catalytic activity in SOEC.
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高影响因子
AICHE JOURNAL
·
2023
·Vol. 69
·期 9
·e18126
·
IF 3.7
TingTing Wang,Biao Meng,Yang Zhou,Yuan Wang,Lei Wang,Lifeng Ding,Yu Zhou,Jun Wang
High tunability of both ionic liquids (ILs) and metal organic frameworks (MOFs) enables great opportunity in the rational designation of IL/MOF composites for physical adsorption and separation. Traditionally, cations and anions of ILs as an entirety are combined with MOFs either inside or outside the microchannels. Herein, organic cations of ILs were confined into Cu-BTC and the champion adsorbent is obtained by using 1-propionic acid-3-vinylimidazole bromide as the precursor with a moderate loading amount, exhibiting higher CO 2 uptakes of 8/5 mmol g −1 than Cu-BTC (6.0/3.5 mmol g −1 ) at 273/298 K and 100 kPa, associating with significantly improved CO 2 /N 2 (CH 4 ) selectivities. The organic cations are interacted with two adjacent CuII 2 (CRO 2 ) 2 paddle wheel units of Cu-BTC, expanding the Cu O bond to strengthen the CO 2 affinity of open Cu sites and also serving as an additive CO 2 adsorptive site. The promotion of CO 2 capture ability is further reflected in the dynamic column breakthrough experiment.
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高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2023
·
IF 2.2
Azizullah Shaikh,Caili Dai,Yongpeng Sun,Varel Foutou,Mingwei Zhao,Qing You,Guang Zhao,Xin Sun,Xingxing Ding,Allah Bakhsh,Jiawei Liu
In recent years, a polymer-free fracturing fluid is under research to minimize the conductivity damage in formation and fracture during and after fracturing. Through extensive experiments, we prepared CO2-sensitive wormlike micelles (WLMs) based fracturing fluid system using anionic surfactant NaOA (Sodium Oleate-C18H33NaO2) and TMTAD (2,6,10-trimethyl-2,6,10-triazaundecane-C11H27N3). Rheological results from viscosity variation with steady shear rate using CO2/pH/time-response after CO2 bubbling confirm that the 3NaOA-TMTAD (3:1) was found as the best one in the properties of WLMs structure and the intermolecular interactions when comparing to 1NaOA-TMTAD and 2NaOA-TMTAD. Further, the surface tension after CO2 bubbling shows a good capability to decrease about 27.01 mN·m−1 at a CMC of 0.543 mM. The cryo-TEM test justifies the occurrence of spherical and WLMs in the fluid, before and after CO2 injection. The fluid system presents an outstanding sand suspension and gel breaking property, which are the positive features during the fracturing and flow back period; respectively. Good response with the alternative changes in CO2 pressures possesses an effective influence on shear viscosity using different temperatures (25 and 85 °C) and shear rates (20, 170, and 200 s−1). Also, the results of a linear relationship and low filtration coefficients verify that the fluid system has good filtration property. Such an easy and environmentally benign fluid system may be involved as a potential candidate in fracturing in unconventional hydrocarbon reservoirs, to reduce the formation damage which is usually very common in the polymer-based fracturing fluid.
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高影响因子
Journal of Experimental Nanoscience
·
2021
·
IF 3.075
Ying Zhang,Yangmei Li,Qiang Tan,Song Hong,Zhenyu Sun
Electrochemical CO2 reduction (ECR) powered by renewable electricity is reckoned to provide an effective strategy to alleviate environmental issues and energy crisis, enabling a potential carbon neutral economy. To boost the ECR to fuels and value-added chemicals, the design of highly active and selective catalysts is important. In this study, we demonstrate facile ultrasonication-facilitated synthesis of two-dimensional copper terephthalate for efficient ECR. High faradaic efficiencies (FEs) of up to 72.9% for hydrocarbons are achieved at a mild overpotential in an H-type cell. In particular, the FE for ethylene (C2H4) formation approaches 50.0% at an applied potential of −1.1 V (vs. the reversible hydrogen electrode), outperforming commercial Cu, Cu2O, CuO, Cu(OH)2 and many recently reported Cu-based materials. The C2H4 partial geometric current density is as high as ∼6.0 mA·cm−2. This work offers a simple avenue to developing advanced electrocatalysts for converting CO2 into high-value hydrocarbons.
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高影响因子
APPLIED CLAY SCIENCE
·
2021
·
IF 5.467
Jiangtao Peng,Haowei Sun,Jian Wang,Peiping Zhang,Weikun Ning,Yan Wang,Wei Zhang,Wenqing Li,Cundi Wei,Shiding Miao
A type of clay-supported catalysts were developed for conversion of CO 2 by encapsulating ZnBr 2 -based Lewis acidic ionic liquids (ZnBr 2 /IL) in halloysite (Hal) via a one-step strategy. The Lewis acidic ionic liquid was loaded within enlarged lumens of Hal via acid treatment, and the mesoporous structure was found to benefit for CO 2 storage/conversion. The composite ZnBr 2 /IL@P-Hal was found to have an adsorption capacity (6.43 cm 3 /g) of CO 2 via adsorption/desorption isotherm measurements. The composite ZnBr 2 /IL@P-Hal showed excellent catalytic performance (TOF value was 1747.7 h −1 ) for coupling of CO 2 with epoxides to produce propylene carbonate under the lack of any cocatalyst . Kinetic investigations indicated the reaction followed an order of one, with respect to catalyst ZnBr 2 /IL@P-Hal. The overall pathway of CO 2 cycloaddition was theoretically validated via DFT calculations. These experimental and computational efforts deepen comprehension of the rational design of clay-based catalysts for CO 2 cycloaddition, further elucidated halloysite was a promising support.
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高影响因子
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