Chunmu Guo

Heilongjiang University

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Wei Wu

Hubei University of Chinese Medicine

Wei Wang

University of Giessen

Jia-Min Lyu

Wuhan University of Technology

Bao‐Lian Su

University of Namur

Lihua Chen

Jiangxi University of Traditional Chinese Medicine

Minghui Sun

Huazhong University of Science and Technology

Xuefeng Bai

Heilongjiang University

Xiaofang Su

Hainan University

Yu Li

Guangzhou University

Zhan Liu

Shanghai Ninth People's Hospital

Cooperative Institutions

Chinese Academy of Sciences

Heilongjiang University

Wuhan University of Technology

Northeast Petroleum University

Huazhong University of Science and Technology

Shanghai Jiao Tong University

State Key Laboratory of Advanced Technology For Materials Synthesis and Processing

University of Chinese Academy of Sciences

Zhengzhou University

Shandong University

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Synthesis of SAPO-41 Molecular Sieves with Different SiO2/Al2O3 Ratios and their Catalytic Performance of n-Decane Hydroisomerization

IOP Conference Series Materials Science and Engineering (2020)

Han Wang Chunmu Guo Jinying Meng Ting Li Le Luo

Using di-n-propylamine (DPA) as a template, SAPO-41 molecular sieves with SiO2/Al2O3 ratios (n) of 0.3, 0.5, and 0.7 were synthesized. Their structure, morphology and acidity were characterized by XRD, N2 physical adsorption, SEM, and Py-IR. All the synthesized samples have characteristic diffraction peaks corresponding to the AFO topological structure, which means that samples are pure phase SAPO-41 molecular sieve. The samples exhibited a highly ordered prismatic morphology with regular arrangement of individual grains, wrapped in flakes, and possessed complete channel structure. With the increase of n, the specific surface area and the amount of B acid showed a downward trend after increasing. Hydroisomerization reaction results of n-decane over SAPO-41 loaded with 0.5wt% Pd (Pd/SAPO-41(n)) showed that the higher the amount of B acid, the higher the conversion of n-decane,and high specific surface area and moderate B acid are favorable for yield of isomerization products. When the conversion of n-decane catalyzed by Pd/S41(0.3)-P was 88.9%, the yield of hydroisomerization products reached 83.3%.

Decane

Morphology

Brønsted–Lowry acid–base theory

10.1088/1757-899x/758/1/012080

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Citations (1)

Intraparticle ripening to create hierarchically porous Ti-MOF single crystals for deep oxidative desulfurization

Dalton Transactions (2023)

Yu Shen Zhan Liu Jia-Min Lyu Chunmu Guo Yilong Wang

For the first time, Ti-MOF single crystals featuring an intracrystal meso–microporous hierarchy were prepared by a facile method of intraparticle ripening, and excellent deep catalytic oxidative desulfurization performance was achieved.

Dibenzothiophene

Benzothiophene

Heteroatom

10.1039/d3dt01731a

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Citations (6)

The size-controllable spindle TiO2 nanograins and their lithium storage properties

Journal of Alloys and Compounds (2018)

Chunmu Guo Qinghua Tian Li Yang

Titanium Dioxide

10.1016/j.jallcom.2018.10.349

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Citations (16)

The hydroisomerization of n-hexadecane over Pd/SAPOs bifunctional catalysts with different opening size: Features of the diffusion properties in pore channels and the metal-acid synergistic catalysis

Fuel Processing Technology (2023)

Qiong Wu Jiamin Yuan Chunmu Guo Zhenni Liu Xiujie Li

Hexadecane

10.1016/j.fuproc.2023.107692

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Citations (13)

Effect of diffusion and metal-acid synergy on catalytic behavior of the Pd/Hierarchical SAPO-31 nanoparticles for hydroisomerization of n-hexadecane

Fuel Processing Technology (2024)

Yu Zhang Chunmu Guo Wei Wang Chang Xu Wei Wu

The hydroisomerization of long-chain n-alkanes proves to be an effective approach for the production of renewable second-generation biodiesel, and the development of bifunctional catalysts with synergistic effect between metal and acidic sites was the key to increase the yield of iso‐alkanes. Herein, novel hierarchical SAPO-31 nanoparticles (S31-Hi) were synthesized with varied amounts of the growth inhibitor 1-octyl-3-methylimidazolium chloride ionic liquid (OMIMCl IL) in a one-stage crystallization, and a proposed formation process was discussed. The 0.1Pd/S31-Hi bifunctional catalysts were prepared by loading only 0.1 wt% Pd based on the S31-Hi by wetness impregnation method and their catalytic performances were evaluated for the hydroisomerization of n-hexadecane. The catalytic performance of 0.1Pd/S31-H based on the S31-H synthesized by adding an appropriate amount of OMIMCl ILs was significantly improved, which can be attributed to the enhanced diffusion originating from its smaller crystal size, higher Pd dispersion, and larger CPd/CH+ value, which was beneficial for achieving synergistic catalysis. The iso‐hexadecane yield of 77.8% and proportion of multi-branched isomers of 51.5%, and catalytic stability within 100 h time on stream was obtained over the 0.1Pd/S31-H at n-hexadecane conversion of 89.3%. These catalysts have application potential for the production of second-generation clean biodiesel with excellent low temperature fluidity.

Hexadecane

10.1016/j.fuproc.2024.108076

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Citations (2)

The synergic effects of highly selective bimetallic Pt-Pd/SAPO-41 catalysts for the n-hexadecane hydroisomerization

Frontiers of Chemical Science and Engineering (2021)

Guozhi Jia Chunmu Guo Wei Wang Xuefeng Bai Xiaomeng Wei

Bimetallic strip

Hexadecane

10.1007/s11705-020-2031-9

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Citations (14)

Engineering surface framework TiO6 single sites for unprecedented deep oxidative desulfurization

National Science Review (2024)

Yu Shen Zhan Liu Jia-Min Lyu Chunmu Guo Xiaoyu Yang

ABSTRACT Catalytic oxidative desulfurization (ODS) using titanium silicate catalysts has emerged as an efficient technique for the complete removal of organosulfur compounds from automotive fuels. However, the precise control of highly accessible and stable-framework Ti active sites remains highly challenging. Here we reveal for the first time by using density functional theory calculations that framework hexa-coordinated Ti (TiO6) species of mesoporous titanium silicates are the most active sites for ODS and lead to a lower-energy pathway of ODS. A novel method to achieve highly accessible and homogeneously distributed framework TiO6 active single sites at the mesoporous surface has been developed. Such surface framework TiO6 species exhibit an exceptional ODS performance. A removal of 920 ppm of benzothiophene is achieved at 60°C in 60 min, which is 1.67 times that of the best catalyst reported so far. For bulky molecules such as 4,6-dimethyldibenzothiophene (DMDBT), it takes only 3 min to remove 500 ppm of DMDBT at 60°C with our catalyst, which is five times faster than that with the current best catalyst. Such a catalyst can be easily upscaled and could be used for concrete industrial application in the ODS of bulky organosulfur compounds with minimized energy consumption and high reaction efficiency.

Organosulfur compounds

Benzothiophene

10.1093/nsr/nwae085

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Citations (9)

The hydroisomerization of n-hexane over highly selective Pd/ZSM-22 bifunctional catalysts: The improvements of metal-acid balance by room temperature electron reduction method

Fuel (2020)

Tong Li Wei Wang Zhaolu Feng Xuefeng Bai Xiaofang Su

Bifunctional catalyst

Hexane

ZSM-5

Chemisorption