Natural Gas Industry B
·
2022
·Vol. 9
·期 2
·176-186
·
IF 0
Liehui Zhang,Xiao He,Xiaogang Li,Kuncheng Li,Jiang He,Zhi Zhang,Jingjing Guo,Yinan Chen,Wenshi Liu
China's shale gas production in 2020 exceeds 200 × 10 8 m³, which creates a miracle in the history of natural gas development in China. The Sichuan Basin has already been and will be the main battlefield of shale gas exploration and development in China. In order to further promote the large-scale efficient development of shale gas in China, under the new situation of global COVID-19 spread and domestic “carbon peak and carbon neutrality” goal, this paper analyzes the progress and challenges of shale gas exploration and development in the Sichuan Basin from four aspects, including resource exploration, gas reservoir engineering, drilling and production engineering and industry regulation, and puts forward countermeasures and suggestions for achieving large-scale efficient development of shale gas. The following research results are obtained: First, the large-scale efficient development of shale gas in the Sichuan Basin has to take the sustainable and stable production of middle–shallow shale gas and the large-scale productivity construction of deep shale gas as the base. Second, compared with the shale gas exploration and development in the North America, the Sichuan Basin has its own characteristics in terms of geographical setting, geological condition, drilling and production technology and industry regulation, which makes it difficult to copy the development pattern of large scale, high density and continuous well deployment from the North America, so it is necessary to adopt the strategy of “high production with few wells”. On the one hand, continue to apply the geology and engineering integration technology to carry out “integrated research, integrated design, integrated implementation and integrated iteration” in the whole life cycle of shale gas well; and on the other hand, carry out problem-oriented continuous researches from the aspects of geological evaluation, development policy, engineering technology and industry regulation, so as to improve geological evaluation theory and technology, innovate gas reservoir engineering theory and method, research and develop engineering technology for cost reduction and efficiency improvement, improve shale gas industry regulation, and form a new pattern of collaborative promotion of technical and non-technical elements. In conclusion, the research results provide important reference and guidance for the large-scale efficient development of shale gas in the Sichuan Basin and even the whole country.
研究领域:
石油工程
·
地质学
·
能源政策
·
环境科学
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DOI
MACROMOLECULES
·
2024
·
IF 5.1
Xiaohua Tong,Guangran Shao,Ming Yuan,Xuewei Li,Wangqing Zhang
Polyimides for natural gas separation are synthesized from copolycondensation of 5-(1H-benzimidazol-2-yl)benzene-1,3-diamine (BIB) with 2,3,5,6-tetramethyl-1,4-phenylenediamine (Durene) and 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) with different 6FDA/BIB/Durene ratios. All polyimides containing benzimidazole groups in side chains display good processability, outstanding thermal stability, and excellent mechanical properties. The CO2 permeability and CO2/CH4 selectivity of the synthesized polyimides change with the 6FDA/BIB/Durene ratio or the BIB content. At a total pressure of 2 bar and a CO2/CH4 feed ratio of 50:50, the polyimide synthesized with 30% BIB content (F10B3D7) exhibits a high CO2 permeability of 197.2 Barrer coupled with a high CO2/CH4 selectivity of 38.6, which is close to the 2008 Robeson’s upper bound. Besides, CO2-induced plasticization and physical aging of polyimide membranes can also be regulated by tuning the 6FDA/BIB/Durene ratio. Specifically, F10B3D7 also exhibits good plasticization resistance and excellent stability against physical aging, and it is demonstrated to be a promising candidate for the purification of biogas and the removal of CO2 molecules from natural gas.
研究领域:
材料科学
·
高分子化学
·
气体分离
·
膜技术
·
能源工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Wenhao Yan,Longtao Ma,Jiangang Xu,Ying Guo,Haibo Hu,Chunyi Zhi,Derek Ho
Fully autonomous operation has long been an ultimate goal in environmental sensing. Although self-powered gas sensors based on energy harvesting have been widely reported to provide power for autonomous operation, these sensors rely on external sources of harvestable energy, thus are not completely self-sufficient. Herein, a battery-sensor hybrid device that can simultaneously function as both a power source and a gas sensor is presented. The battery-sensor consists of a cathode that reduces NO2 to NO2– via a catalyst with Fe–Nx species distributed on highly graphitic porous nitrogen-doped carbon. On the basis of the efficient and selective electrocatalytic activity of the catalyst, the battery-sensor is capable of sensing NO2 and does so without any external power, overcoming the long-standing grand challenge to achieve complete energy self-sufficiency. Furthermore, through controlling the working current the sensing range can be significantly expanded and electronically tuned, which is not only unprecedented for gas sensors but also of remarkable commercial practicality. The proposed battery-sensor hybrid architecture represents a new paradigm toward sensors with complete energy self-sufficiency.
研究领域:
环境传感
·
能量收集
·
电化学传感器
·
材料科学
·
气体检测技术
✓ 已验证
DOI
高影响因子
AICHE JOURNAL
·
2020
·Vol. 66
·期 10
·e16543
·
IF 3.519
Shanshan He,Xu Jiang,Songwei Li,Feitian Ran,Jun Long,Lu Shao
The high fractional free volume (FFV) endowed polymers of intrinsic microporosity (PIMs) with high gas permeability but low selectivity. Herein, an intermediate temperature range was deliberately utilized to tune PIM-1 membrane microstructure in nitrogen atmosphere to enhance gas separation performance. During intermediate thermal manipulation, the synergistic effects of thermal-induced cross-linking and decomposition on PIM-1 membranes have optimized the micropores for significantly increasing membrane molecular-sieving ability with the boosted selectivity of 350 (H 2 /N 2 ), 1,472 (H 2 /CH 4 ), 3,774 (H 2 /C 3 H 8 ), and 197 (CO 2 /CH 4 ) respectively, with the H 2 permeability of 234 Barrer, correspondingly, surpassing the “Robeson's Upper Bound”. The facile strategy simultaneously utilizing the thermal-induced cross-linking and decomposition, might provide a new platform to develop the high-performance membranes for highly-efficient hydrogen purification and CO 2 separations.
研究领域:
材料科学
·
高分子科学
·
化学工程
·
膜技术
·
气体分离
✓ 已验证
DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2017
·Vol. 33
·期 1
·24-30
·
IF 1.024
Li Lang,Xie Shengming,Zhang Junhui,Chen Ling,Zhu Pengjing,Yuan Liming
Homochiral metal-organic frameworks(HMOFs) have special properties, such as high surface area, fasci-nating structures and excellent chemical and thermal stability and they have broad application prospects. In this work, we reported the use of HMOF Co- L -GG( L -GG, dipeptide H-Gly- L -Glu) as the stationary phase for separating race-mates in gas chromatography. Co- L -GG coated fused silica capillary column(10 m×250 μm i.d.) was prepared via a dynamic coating method. Thirty racemates belonging to different classes of organic compounds were resolved in-cluding halohydrocarbons, ketones, esters, ethers, organic acids, epoxyalkanes, alcohols and sulfoxides. When com-pared with the previously reported chiral MOFs-coated capillary columns, the Co- L -GG coated column exhibited broader chiral resolution ability towards chiral compounds.
研究领域:
分析化学
·
材料科学
·
色谱技术
·
金属有机框架材料
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2021
·
IF 3.764
Peng Xu,Zhihao Jin,Tianyu Zhang,Xianfu Chen,Minghui Qiu,Yiqun Fan
The composition of ship exhaust gas is complex and a great challenge to the long-term stability of a membrane contactor. In this work, a facile method for constructing a functional surface on an alumina membrane substrate was realized for antiparticle or antidust adhesion in the process of exhaust-gas desulfurization. Polytetrafluoroethylene (PTFE) nanoparticles were dispersed, coated, and thermally sintered on the outer surface of an alumina membrane substrate to obtain a robust defect-free layer that exhibited hydrophobicity and a low friction coefficient. The PTFE coating served as a protective layer with low surface energy, low surface roughness, and a low coefficient of friction, which reduced the adhesion of foulants and facilitated their release. Meanwhile, the porous alumina substrate, wetted by an ammonia solution, still achieved excellent membrane absorption performance for SO2. In desulfurization and antiparticle testing, the PTFE-coated membrane not only showed the same absorption performance as the original membrane but also demonstrated greater resistance to particle adhesion in a dusty environment throughout 12 h of testing. These results indicated that the designed membrane can be utilized for gas absorption in a dusty environment.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
·
2021
·Vol. 36
·期 12
·125022
·
IF 2.352
Yuchang Liu,Hongjie Liu,Anjie Hu,Yingmei Wei,Wenchao Ou,Xianwang Deng,Shaopeng Wang,Kefu Yu
The quest to develop inexpensive chemical sensing materials that are energy-efficient, portable, and with efficient performance lies at the center of next-generation sensor development. Owing to their low cost, easy preparation, high response, and smooth integration with electronic circuits, metal oxide semiconductors have received particular attention. Yet, metal oxide semiconductor based sensors often suffer from high power consumption due to their high operating temperature, which hinders them from practical applications. To solve this problem, herein, we proposed ultrathin sub-4 nm SnO2 films synthesized by a facile tunable hydrothermal method. Benefiting immensely from its two-dimensional anisotropic nature, the proposed SnO2 ultra-thin film exhibits a large specific area of 94.41 m2 g−1 and possesses surface oxygen vacancies. The obtained sample was practically applied as a gas sensor; the results indicate that the ultra-thin SnO2 film based sensor exhibits the highest sensitivity to triethylamine (19.2 at 100 ppm), outstanding repeatability, and excellent sensing selectivity at a low working temperature of 150 °C.
研究领域:
材料科学
·
化学传感器
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Ying Cheng,Shumaila Razzaque,Zhen Zhan,Bien Tan
Fabrication of functionalized hypercrosslinked polymers (HCPs) with high specific surface area has gained significant research interest and their utilization for gas storage is still a trending research area. Considering the significance of solvent knitting strategy in construction of remarkably high surface area HCPs, we report fabrication of cyano-functional HCPs via one step Friedel-Crafts reaction. The series of HCPs were obtained by copolymerizing the rigid monomer TPB with a 2-napthonitrile in different molar ratio. The resultant co-polymerized polymers contained a plenty of nitrile functional groups and possessed high BET surface area. Among the series of such HCPs, HCP-TPB-CN-3:1 showed the highest BET surface area up to 2017 m 2 g −1 . These HCPs have enriched nitrogen in their pore walls that enhance the facile interaction of CO 2 to achieve higher capture capacity of 21.3 wt% at 273 K. Moreover, the HCP-TPB-CN was explored for CH 4 storage and showed absolute adsorption capacity of 0.35 g/g at 273 K, 80 bar, which is comparable with the porous polymers reported so far. These results highlight the significance of solvent knitting strategy and broaden the scope of HCPs for versatile industrial applications.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2026
·Vol. 16
·期 1
·77
·
IF 4.3
Zhaolei Liang,Chang Sun,Songhe Shen,Qingqing Li,Feng Luo
The reverse water–gas shift (RWGS) reaction serves as a highly flexible and critical pathway for converting CO 2 into CO, with Pt-based catalysts having been widely investigated. Here, a series of platinum-rare earth (RE) subnanometric bimetallic clusters (SBCs) were successfully prepared on carbon support by the potassium vapor reduction method. Their structure and electronic properties, along with catalytic performance, were systematically characterized and evaluated. The Pt-RE SBC catalysts exhibited excellent catalytic activity, maintaining CO selectivity above 95% at high CO 2 conversion levels and demonstrating stable operation over 100 h at 600 °C. Furthermore, the influence of different supports (carbon black and CeO 2 ) on the catalytic performance was compared. It was found that Pt-Sc SBCs supported on the carbon exhibited better dispersion, smaller particle size, and superior catalytic performance relative to the CeO 2 supported counterpart. This study provides new insights into the design of highly efficient and stable RWGS catalysts, highlighting the key role of the Pt-RE SBC interface synergistic effect and support selection, which is of great significance for the resource utilization of CO 2 .
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 8.3
Qiang Gao,Yang Hu,Hongyun Hu,Chan Zou,Xinhong Yuan,Xian Li,Hong Yao
Hydrogen production from organic solid waste via pyrolysis is a low-carbon and promising way. However, low hydrogen conversion capability limited by heat transfer and catalysis hinders highly efficient utilization of solid waste pyrolysis gases. In this study, the selected NaOH–Na 2 CO 3 binary salt was introduced to optimize H 2 production during thermal treatment of waste tires, and the characteristics of hydrogen distribution and its generation mechanism were investigated. The results demonstrated that molten salt treatment increased H 2 yield by 17 times compared to conventional pyrolysis at 575 °C, and H 2 share in pyrolysis gas exceeded 72 vol%. An increase in temperature also increased hydrogen yield under molten salt conditions, and the hydrogen yield rose to 14.3 mmol/g-feedstock at 575 °C. Additionally, molten salt exhibited large H 2 production with over 2 mmol/g-feedstock for large particle feedstocks with a particle size of 10 mm. According to oil analysis and rubber pure substance validation, molten salt promoted the Diels-Alder reaction and aromatization of butadiene monomers from the decomposition of cis -butadiene and styrene-butadiene rubber, leading to the release of hydrogen and increasing the H 2 concentration level in the pyrolysis gas. This study provides a technical practice for the hydrogen production from solid waste.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Membranes
·
2026
·
IF 12.6
Ying Weng,Fan Feng,Hao Yi Peng,Hui Shen Lau,Can Zeng Liang,Mohamad Rezi Abdul Hamid,Wai Fen Yong
Mixed matrix membranes (MMMs) are an energy efficient and highly tunable approach to gas separation, achieved by integrating the distinct transport properties of polymers and nanomaterials. However, MMMs commonly face challenges such as trade-off between permeability and selectivity, as well as CO 2 plasticization. In particular, polyimide membranes suffer from low resistance to CO 2 plasticization, typically below 15 bar. In this study, we present a synergistic approach to overcome the permeability-selectivity trade-off, and enhance CO 2 plasticization resistance through the rational engineering of the fractional free volume (FFV) of 6FDA-durene polyimide-based MMMs. A highly permeable aluminum-based metal-organic framework (MOF), Christian-Albrechts-Universität (CAU-10-H) was first incorporated into the 6FDA-durene polyimide matrix to enhance the FFV, thereby improving gas permeability. A small loading of CAU-10-H increased the CO 2 permeability by 98.8% (e.g., from 501 to 996 Barrer), with only a slight decrease in CO 2 /N 2 selectivity (e.g., from 15 to 13.4). Subsequently, sub-nanometer transport control was achieved by introducing amine-based cross-linkers to regulate the expanded polyimide matrix and strengthen the polymer-MOF interface. The optimized 6D/CAU(3):EDA-2h membrane demonstrated a H 2 /CO 2 selectivity of 8.5 while maintaining a high H 2 permeability of 34 Barrer. This represents an 8.5-fold improvement in selectivity compared to the uncross-linked MMM, surpassing the 2008 Robeson upper bound. Furthermore, the membrane demonstrated improved resistance to CO 2 plasticization up to 30 bar and moderate resistance to physical aging, exhibiting a 43% decrease in H 2 permeability over 100 days. These findings highlight the potential of synergistic filler-matrix-cross-linker integration as an effective strategy for advancing MMMs toward next-generation gas separation membranes.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Xiao-Fang Shu,An-Xu Ma,Fu Li,Chang-Xiu Ma,Jin Liu,Xu-Xu Jin,Sheng-Ming Xie,Bang-Jin Wang,Jia-Ni Yang,Jun-Hui Zhang,Li-Ming Yuan
Background Chiral metal-organic cages (CMOCs) represent a novel class of porous materials featuring tunable chiral cavities and distinctive chiral microenvironments, endowing them with remarkable advantages in enantiomeric separation. However, the reported CMOCs are mostly constructed with noble or transition metal ions, limiting their prospects in energy sustainability and green development. Furthermore, although existing CMOCs exhibit outstanding separation performance, their enantioseparation ability and application scope are still restricted. Therefore, developing novel CMOC materials that combine low cost and outstanding chiral recognition performance for chromatographic applications is of great significance. Results Herein, a chiral Al-based CMOC (Al-CMOC) was fabricated and utilized as a novel stationary phase for high-resolution gas chromatographic separation of diverse organic compounds, including n-alkanes, alkylbenzenes, n-alcohols, isomers, as well as chiral analytes involving alcohols, esters, ethers, and arenes. The Al-CMOC column exhibits high column efficiency (3100 plates·m −1 for n-dodecane) and achieves a maximum resolution of 9.71 for ethyl 3-hydroxybutyrate. The enantioseparation performance of the Al-CMOC column was compared with that of commercially available β -DEX 120 column and the previously reported Fe 4 II L 4 column, and the results demonstrated that the three columns exhibit favorable complementarity. In addition, the reproducibility studies revealed that the relative standard deviations (RSDs) of peak area and retention time were below 1.0% for ethyl 3-hydroxybutyrate and nitrotoluene, demonstrating the exceptional stability of the Al-CMOC column. Significance Al-based CMOCs constructed from aluminum featuring high crustal abundance, low biotoxicity, and low cost, overcome the limitations of conventional CMOC materials, which largely rely on precious and transition metal centers. Moreover, the as-prepared Al-CMOC serves as a promising chiral separation medium, which not only broadens the application scope of CMOCs in chromatographic analysis, but also provides a feasible strategy for developing advanced gas chromatographic chiral stationary phases.
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DOI
高影响因子
危险品化学品经营许可证（带存储）