Development of novel alkane dehydrogenation process by redox lattice S species on sulfide catalysts

2020 Fiscal Year Final Research Report

• Project/Area Number: 18H01775
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 27020:Chemical reaction and process system engineering-related
• Research Institution: Shizuoka University
• Principal Investigator: Watanabe Ryo 静岡大学, 工学部, 准教授 (80548884)
• Co-Investigator(Kenkyū-buntansha): 福原 長寿 静岡大学, 工学部, 教授 (30199260)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Keywords: レドックス / アルカン / 脱水素 / 格子硫黄 / 硫化物

Outline of Final Research Achievements

A novel catalytic process for alkane dehydrogenation was investigated in which a high concentration of hydrogen sulfide (H2S) coexisted in the dehydrogenation of alkanes of propane and butane, expecting for the lattice S2- in the sulfide catalyst is continuously regenerated. It was found that Fe-based catalysts are effective in the dehydrogenation process, and that the cofeeding H2S continuously regenerated sulfur defects on the catalysts. The Fe-based catalyst exhibited an excellent stability due to smooth redox cycling.

Free Research Field

触媒反応工学

Academic Significance and Societal Importance of the Research Achievements

アルカン脱水素プロセスは，石油化学製品として利用価値の低いアルカンからオレフィンを高選択的に製造できる。現在，工業的に稼動している脱水素プロセスでは，短時間の反応の後に再生処理を施すサイクリックな再生方式が採用され，連続的にオレフィンを製造できる新規な触媒や代替触媒プロセスが望まれている。本研究にて開発した反応システムは，急速な触媒失活により触媒再生を必要とする従来の脱水素プロセスを刷新する，新しい触媒プロセスの開拓につながる。