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Science China Chemistry 2022年第11期65卷 2163-2176页

作者： Hongliu Wan Nengfeng Gong Lichen Liu Department of Chemistry Tsinghua UniversityBeijing 100084China State Key Laboratory of coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China National Energy Center for coal to Clean Fuels Synfuels China Co.Ltd.Beijing 101407China

Long-chain alkanes are abundant feedstocks supplied by natural resources and chemical industry. Specially, normal long-chain alkanes are primary products from Fischer-Tropsch synthesis(FTS) process, which is an important route for the utilization of coal in China. Facing a shift of energy nexus towards sustainable society, the conversion of long-chain alkanes derived from coal into value-added products(such as alkenes and oxygenates) is of great importance for securing China’s energy supply and the role transition of the commercial FTS plants from fuel makers to chemical suppliers. Among the potential transformation routes,the direct dehydrogenation of long-chain alkanes into alkenes is an attractive and practical route, due to the broad applications of long-chain alkenes(especially the linear α-olefins). In this review, we will summary the key insights obtained from the literature on the dehydrogenation of light alkanes based on supported metal catalysts and the dehydrogenation of alkanes with homogeneous molecular catalysts and then discuss how to translate these lessons into the development of efficient catalysts and processes for the dehydrogenation of long-chain alkanes into long-chain alkenes.

关键词： long-chain alkanes catalytic dehydrogenation α-olefins subnanometric cluster zeolite

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Characteristics of coal re-oxidation based on microstructural and spectral observation

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International Journal of Mining Science and Technology 2015年第5期25卷 749-754页

作者： Liang Yuntao Tian Fuchao Luo Haizhu Tang Hui School of Safety Engineering China University of Mining & Technology State Key Laboratory of coal Mine Safety Technology China Coal Technology & Engineering Group of Shenyang Research Institute

In order to investigate the characteristics of re-oxidation of residual coal in goafs in close coal seam mining,scanning electron microscope and infrared spectrometer are used to study the changes of coal microstructure and chemical reaction of functional groups of eight coal samples at different *** shows that after initial oxidation,the surface morphology of pore are different,and the porosity of coal is increased and the oxygen adsorption capacity of coal is *** change of coal molecular structure and presence of a large amount of active oxygen-containing functional groups lead to increasing tendency of coal to further *** addition,the higher lever of the initial oxidation is,the easier the re-oxidation occurs.

关键词： Spontaneous combustion of coal Re-oxidation Oxidation characteristics Microstructure Infrared spectrum

Optical microscopy analysis of briquette binders

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International Journal of coal Science & Technology 2014年第4期1卷 421-427页

作者： Yue Wang Xiangfei Bai Key State Laboratory for coal Mining and Clean Utilization Beijing 100013China Beijing Research institute of coal Chemistry China Coal Research InstituteBeijing 100013China

Environmental requirements and demands from the coal industry have resulted in a boom in briquetting technology in *** this work,a low-volatility bituminous coal from the Changcun mine and bentonite binders are used for *** compressive strength,impact strength,and thermal stability of briquettes made using different binder concentration are *** morphology and distribution of binders in briquettes are studied by optical microscopy and digital image-processing *** concept of roundness is introduced to indicate the pressure to which the binders are subjected during *** influences of binder morphology on briquette strength are *** binders are mainly in aggregated and dispersed forms,present in similar proportions in the *** binders with large differences in size are not *** roundness values are concentrated between 1.5 and 4.0,which indicates that most aggregated binders are compressed and conform well to the surfaces of coal particles.A few binders had roundness value approximating 1 or above 4,which indicated that these were under little pressure or overloaded,*** relationships between briquette strength and binder morphology show that aggregated binders are detrimental to mechanical strength while dispersed binders benefit briquetting.

关键词： Briquettes-Binder-Optical analysis Morphological characteristics

Opposed multi-burner gasification technology:Recent process of fundamental research and industrial application

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Chinese Journal of Chemical Engineering 2021年第7期34卷 124-142页

作者： Fuchen Wang Guangsuo Yu Haifeng Liu Weifeng Li Qinghua Guo Jianliang Xu Yan Gong Hui Zhao Haifeng Lu Zhongjie Shen institute of Clean coal Technology East China University of Science and TechnologyNational Engineering Research Center of CWS Gasification and Coal Chemical Industry(Shanghai)East China University of Science and TechnologyShanghai 200237China

Opposed multi-burner(OMB)gasification technology is the first large-scale gasification technology developed in China with completely independent intellectual property *** has been widely used around the world,involving synthetic ammonia,methanol,ethylene glycol,coal liquefaction,hydrogen production and other *** paper summarizes the research and development process of OMB gasification technology from the perspective of the cold model experiment and process simulation,pilotscale study and industrial *** latest progress of fundamental research in nozzle atomization and dispersion,mixing enhancement of impinging flow,multiscale reaction of different carbonaceous feedstocks,spectral characteristic of impinging flame and particle characteristics inside gasifier,and comprehensive gasification model are *** latest industrial application progress of ultralarge-scale OMB gasifier and radiant syngas cooler(RSC)combined with quenching chamber OMB gasifier are introduced,and the prospects for the future technical development are proposed as well.

关键词： Opposed multi-burner Gasification Multiscale Numerical simulation Industrial application

Catalytic Conversion of CO2 to Cyclic Carbonates through Multifunctional Zinc-Modified ZSM-5 Zeolitet

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Chinese Journal of Chemistry 2018年第3期36卷 187-193页

作者： qing-Ning Zhao Qing-Wen Song Ping Liu Qian-Xia Zhang Jun-Hua Gao Kan Zhang State Key Laboratory of coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan Shanxi 030001 China Department of Chemistry Shanghai University Shanghai 200444 China

The production of fine chemicals using CO2 as C1 building block through inexpensive heterogeneous catalysts with high efficiency under low pressure is challenging. Herein we propose for the first time the utilization of a multifunctional heterogeneous zinc-modified HZSM-5 （ZnHZSM-5） catalyst for upgrading CO2 by incorporation into cyclic carbonates from CO2 and epoxides. Owing to the nice surface properties such as abundant Lewis acid, Bronsted acid and Lewis base sites, large surface area, and plenty of micropores, CO2 could be concentrated and well activated in ZnHZSM-5 verified by CO2-TPD, TG-MS, etc. Meanwhile, the epoxides were also activated through metal center and hydrogen bond. Therefore, the reaction can easily assemble at the catalyst interface and show exceptional performance, affording the aimed products with high yield of up to 99% in the presence of commercial tetra-n-propylammonium bromide （90% in kilogram scale with 0.004 mol% ZnHZSM-S and 0.03.5 mol% n^Pr4NBr）.

关键词： carbon dioxide utilization zeolite heterogeneous catalysis multifunctional activation heterocycle

n-Dodecane Hydroconversion over Nickel Supported on Different Mesoporous Aluminosilicates

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Chinese Journal of Chemistry 2004年第11期22卷 1239-1244页

作者：房克功任杰孙予罕 State Key Laboratory of coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan Shanxi 030001 China

Several 2.0 wt% nickel catalysts supported on nanometer bimodal mesoporous aluminosilicate (NBMAS), AlHMS and AlMCM-41 were prepared by means of the wetness impregnation method. The characterization tech-niques such as Py-FTIR and H2 chemisorption showed that the amount of Br鰊sted acid sites decreased in the order of Ni/AlHMS>Ni/AlMCM-41>Ni/NBMAS, while the nickel dispersion differed a little. In the catalytic n-dodecane hydroconversion, the highest conversion was obtained over Ni/NBMAS, and the lowest isomerization selectivity occurred over Ni/AlHMS. For the cracked products, the symmetrical carbon number distribution cen-tered at C6 was obtained on the Ni/AlMCM-41 catalyst due to the well balanced metal/acid functions, whereas the Ni/AlHMS and Ni/NBMAS catalysts led to more C3-C5 and C1+C11 products, respectively.

关键词： mesoporous aluminosilicate nickel bifunctional catalyst n-dodecane hydroconversion

Catalytic oxidation of low concentration formaldehyde over Pt/TiO_(2) catalyst

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Chinese Journal of Chemical Engineering 2021年第1期34卷 190-195页

作者： Yuan Su Keming Ji Jiayao Xun Kan Zhang Ping Liu Liang Zhao State Key Laboratory of coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China

Formaldehyde(HCHO) is an important indoor *** oxidize low concentration HCHO is an effective way to eliminate indoor *** this study,a series of Pt/TiO_(2) catalysts are prepared by impregnation and reduced by NaBH_*** effects of loading amount of Pt and cry stal type of TiO_(2) on the physical and chemical properties and the catalytic performance in HCHO oxidation reaction are *** results show that the quantity of active site and the oxygen vacancy of catalysts increa sed with increasing Pt content,which is beneficial to promote the further performance of ***,with the further rises of Pt content,the specific surface area further decreases,and the proportion of Pt^(2+) species on the catalyst surface which is significant to catalytic properties also decreases,causing catalytic performance *** with the catalyst supporting on rutile,the Pt/α-TiO_(2) catalyst supporting on anatase has larger specific surface area,more Pt^(2+) phase and easier to form oxygen vacancy in the support,which cause better catalytic *** catalyst with Pt content of0.1 wt% and supported by anatase TiO_(2) has the best catalytic *** HCHO conversion efficiency reaches 98% and 100% at 50℃ and 100 ℃, and the stabilization time is longer than 140 h.

关键词： Catalyst support Catalysis Fixed-bed Pt/TiO_(2)

Templated synthesis of highly ordered mesoporous cobalt ferrite and its microwave absorption properties

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Chinese Physics B 2014年第8期23卷 147-153页

作者：力国民王连成徐耀 Key Laboratory of Carbon Materials Institute of Coal Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences

Based on the nanocasting strategy, highly ordered mesoporous CoFe2O4 is synthesized via the ＇two-solvent＇ im- pregnation method using a mesoporous SBA-15 template. An ordered two-dimensional （P6mm） structure is preserved for the CoFe2O4/SBA-15 composite after the nanocasting. After the SBA-15 template is dissolved by NaOH solution, a mesoporous structure composed of aligned nanoparticles can be obtained, and the P6mm structure of the parent SBA-15 is preserved. With a high specific surface area （above 90 m2/g） and ferromagnetic behavior, the obtained material shows potential in light weight microwave absorption application. The minimum reflection loss （RL） can reach -18 dB at about 16 GHz with a thickness of 2 mm and the corresponding absorption bandwidth is 4.5 GHz.

关键词： two-solvent mesoporous cobalt ferrite microwave absorption

Computer generation of detailed reaction networks in hydrocracking of Fischer-Tropsch wax

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Chinese Journal of Chemical Engineering 2022年第1期35卷 342-349页

作者： Jingjing Wang Wei Zhao Kunpeng Song Hongwei Xiang Liping Zhou Yong Yang Yongwang Li State Key Laboratory of coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China National Energy Center for coal to Liquids Synfuels China Co.Ltd.Huairou DistrictBeijing 101400China University of Chinese Academy of Sciences Beijing 100049China

Fischer-Tropsch synthesis(FTS)wax is a mixture of linear hydrocarbons with carbon number from C7 to C70+.Converting FTS wax into high-quality diesel(no sulfur and nitrogen contents)by hydrocracking technology is attractive in economy and *** study of the hydrocracking of FTS wax in elementary step level is very challenging because of the huge amounts of reactions and species *** of reaction networks for hydrocracking of FTS wax in which the chain length goes up to C70 is described on the basis of Boolean adjacency *** of the species(including paraffins,olefins and carbenium ions)involved in the elementary steps is represented digitally by using a(N+3)N matrix,in which a group of standardized numbering rules are designed to guarantee the unique identity of the ***,the elementary steps are expressed by computer-aided matrix transformations in terms of proposed reaction *** memory allocation is used in species storage and a characteristic vector with nine elements is designed to store the key information of a(N+3)N matrix,which obviously reduces computer memory consumption and improves computing *** detailed reaction networks of FTS wax hydrocracking can be generated smoothly and accurately by the current *** work is the basis of advanced elementary-step-level kinetic modeling.

关键词： Hydrocracking Fischer-Tropsch synthesis wax Boolean adjacency matrixes Reaction network

coal reservoir characteristics and their controlling factors in the eastern Ordos basin in China

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International Journal of Mining Science and Technology 2016年第6期26卷 1051-1058页

作者： Li Guihong Xi'an Research institute of China coal Technology and Engineering Croup Corp Xi'an 710054 China

In the eastern Ordos basin, due to the diversity of the tectonic setting, coal rank, gas content and permeability, coal reservoirs have differing characteristics. In this paper, based on coal reservoir geometry, gas content, adsorption capacity, pores and fissures developments and permeability data, the coalbed methane(CBM) reservoir characteristics and their controlling factors in the eastern Ordos basin is discussed. The results show that, due to undergoing different paleo-temperatures in the geological history,coal rank has a higher trend from the north part to the south and from the shallow part to the inward basin, which determines CBM distribution and recoverability. In the north, although having large coal thickness and high permeability, Zhungeer-Xingxian coal rank is low, and gas content is small. In the central part, with medium rank, higher gas content and relatively high permeability, and the Wubao-Liulin area is the most favorable area in the eastern Ordos basin. In the southern part, medium and high metamorphism coal occurs, and although having the highest gas content, the permeability in the Hancheng area is low due to the development of sheared coal.

关键词： coal reservoir coal rank Controlling factors Eastern Ordos basin