Chunshan Song

Chinese University of Hong Kong

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Co-Authors

Xinwen Guo

Dalian University of Technology

276

Xiaoliang Ma

Tianjin University of Technology

116

Min Liu

Liaocheng University

Xiaoxing Wang

Institute of Coal Chemistry

Anfeng Zhang

Dalian University of Technology

Xiaowa Nie

Dalian University

Keyan Li

Dalian University of Technology

Harold H. Schobert

Pennsylvania State University

James J. Strohm

Albemarle (United States)

John M. Andrésen

Carbon Solutions (United States)

Cooperative Institutions

Pennsylvania State University

228

Dalian University of Technology

226

Chinese Academy of Sciences

206

Dalian University

148

University of Chinese Academy of Sciences

John Wiley & Sons (United States)

Hudson Institute

Dalian Institute of Chemical Physics

University of Science and Technology of China

Zhejiang University

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Fine-Tuning the Active Phases of CoFe Alloy Carbides for Boosting Olefin Synthesis from CO₂ Hydrogenation

ACS Catalysis (2024)

Na Liu Qixiang Fan Jian Wei Guanghui Zhang Jian Sun

The rational design of highly efficient Co–Fe bimetallic catalysts is highly desirable for CO2 hydrogenation to olefins as an important alternative for traditional petroleum cracking technology. The treatment of carburization to construct the active phases stands out. Herein, the composition of active CoFe alloy carbide catalysts consisting of χ-(CoxFe1–x)5C2 and θ-(CoxFe1–x)3C phases was fine-tuned by altering the carburization environment. The synergistic effect between the dual components was optimized to improve the CO2 activation and C–C coupling capacity. The appropriate carburization degree and phase composition of CoFe alloy carbides are favorable for enhancing the space-time yield (STY) of C2+ olefins, up to 328.1 mg gcat–1 h–1 on the CoFe catalyst carburized in H2/CO = 2 at 320 °C for 8 h. This work provides useful guidelines for regulating product distribution in the design and synthesis of highly efficient catalysts.

Bimetallic strip

10.1021/acscatal.4c06112

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Effects of low-temperature catalytic pretreatments on coal structure and reactivity in liquefaction. Technical progress report, July--September 1993

Chunshan Song Ankita Saini Lingtong Huang Harold H. Schobert Patrick G. Hatcher

In this quarter, progress has been made in the following two aspects: (1) spectroscopic and chemical reaction studies on the effects of drying and mild oxidation of a Wyodak subbituminous coal on its structure and pretreatment/liquefaction at 350{degrees}C; and (2) effects of dispersed catalyst and solvent on conversion and structural changes of a North Dakota lignite. Drying and oxidation of Wyodak subbituminous coal at 100-150{degrees}C have been shown to have significant effects on its structure and on its catalytic and non-catalytic low-severity liquefaction at 350{degrees}C for 30 min under 6.9 MPa H{sub 2}. Spectroscopic analyses using solid-state {sup 13}C NMR, Pyrolysis-GC-MS, and FT-IR revealed that oxidative drying at 100-150{degrees}C causes the transformation of phenolics and catechol into other related structures (presumably via condensation) and high-severity air drying at 150{degrees}C for 20 h leads to disappearance of catechol-like structure. Increasing air drying time or temperature increases oxidation to form more oxygen functional groups at the expense of aliphatic carbons. Such a clearly negative impact of severe oxidation is considered to arise from significantly increased oxygen functionality which enhances the cross-link formation in the early stage of coal liquefaction. Physical, chemical, and surface physicochemical aspects of drying and oxidation and the role of water are also discussed. A North Dakota lignite (DECS-1) coal was studied for its behaviors in non-catalytic and catalytic liquefaction. Reactions were carried out at temperatures between 250 and 450{degrees}C. Regardless the reaction solvents and the catalyst being used, the optimum temperature was found to be 400{degrees}C. The donor solvent has a significant effect over the conversion especially at temperatures higher than 350{degrees}C.

Reactivity

10.2172/10143986

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Catalytic fuel processing for fuel cell applications. Challenges and opportunities

ACS Division of Fuel Chemistry, Preprints (2001)

Chunshan Song

Source

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Citations (9)

Estimating reactivity of asphaltenes by a combination of quantum chemical calculation and statistic analysis

Xiaoliang Ma Chunshan Song

Asphaltene

Statistic

Reactivity

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Origin of Pd-Cu bimetallic effect for synergetic promotion of methanol formation from CO2 hydrogenation

Journal of Catalysis (2018)

Xiao Jiang Xiaowa Nie Xiaoxing Wang Haozhi Wang Naoto Koizumi

Bimetallic strip

Temperature-programmed reduction

10.1016/j.jcat.2018.10.001

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Citations (100)

Theoretical Study on Hydrodeoxygenation of o-Cresol Over Pd-Doped Fe Catalyst

Acta Petrolei Sinica(Petroleum Processing Section) (2021)

Zeshi Zhang Nie Xiao-Wa Chunshan Song Guo Xinwen

Hydrodeoxygenation

10.3969/j.issn.1001-8719.2021.04.002

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Citations (2)

Shape-Selective Catalysis for Specialty Chemicals from Coal-Derived Polycyclic Hydrocarbons

ACS Division of Fuel Chemistry, Preprints (2002)

Chunshan Song

Introrduction Coal-derived liquids, such as distillates from coal liquefaction, pyrolysis, and carbonization, are rich in polycyclic aromatic hydrocarbons. These PAHs are not desirable components of conventional liquid fuels such as gasoline or diesel fuels. However, they can be converted into value-added chemicals and advanced polymer materials. There are some exciting developments in advanced polymer materials and specialty chemicals which present new opportunities for catalytic research on selective conversion of polycyclic compounds that can be obtained from coal-derived liquids and some refinery steams [1-4].

Destructive distillation

Refinery

Petrochemical

Speciality chemicals

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Suppression of pyrolytic degradation of n-alkanes in jet fuels by hydrogen-donors.

John M. Andrésen James J. Strohm M.M. Coleman Chunshan Song

The pyrolytic degradation of alkanes in jet fuels can be extensively reduced by adding suitable hydrogen donors, that suppress the formation of free radicals. Accordingly, this paper characterizes the chemical interactions between ntetradecane and the hydrogen donors benzyl alcohol and 1,2,3,4-tetrahydro1naphthol. The hydrogen donors produced the expected overall enhancement on the liquid yields and reduced cracking of the n-tetradecane. The observed suppression of pyrolytic degradation was strongly related to a reduction in the alkane products adding benzyl alcohol, but the 1,2,3,4-tetrahydro-l-naphthol indicated an initial decrease in the alkenes.

Pyrolytic carbon

Tetradecane

Jet fuel

Degradation

Alkane

Benzyl alcohol

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Recent advances in fuel processing catalysts for fuel cell applications

Catalysis Today (2004)

Sai P. Katikaneni Anne M. Gaffney Shabbir Ahmed Chunshan Song

10.1016/j.cattod.2004.10.001

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Citations (4)

In Situ Synthesis and Stabilization of Co2c for Co2 Hydrogenation to Valuable Hydrocarbon

SSRN Electronic Journal (2022)

Mingrui Wang Peng Wang Guanghui Zhang Yulong Liu Rongtan Li

Cobalt carbide (Co2C) is a promising catalyst in CO2 hydrogenation to commercial chemicals, whereas its facile synthesis and stabilization under reactions remain challenging, limiting its practical application. Herein, we report the in situ synthesis and stabilization of Co2C with K2CO3 modification during CO2 hydrogenation. Theoretical calculations elucidate that K enhances the accumulation of surface C atoms and the carburization. We demonstrate that carburization of cobalt oxide to Co2C is more facile than that of metallic cobalt and the stabilization of Co2C is dependent on the reaction atmosphere in conjunction with the K promoter. Notably, co-feeding 2 vol.% H2O can dramatically promote the carburization, as confirmed by in situ XRD and XPS analyses. The selectivity to C2+ products in hydrocarbons on Co2C reached 67.3% at 300 °C. This work provides a method to in situ synthesize Co2C and constitutes a fundamental understanding on its formation and stabilization in CO2 hydrogenation.

10.2139/ssrn.4186997

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