Direct conversion of ethane to acetic acid over H-ZSM-5 using H2O2 in aqueous phase
Authors: Abul Kalam Md. Lutfor Rahman, Rie Indo, Hidehisa Hagiwara, Tatsumi Ishihara
Abstract:
Partial oxidation of ethane on protonated pentasil-type zeolite (H-ZSM-5) was studied by using hydrogen peroxide (H2O2), an environment friendly oxidizing agent. Acetic acid (CH3COOH) and formic acid (HCOOH) were obtained with high yield and selectivity from ethane. In addition, the influence of reaction parameters such as temperature, pressure, amount of oxidizing agent, and reaction period was investigated. Yields of acetic acid and formic acid (based on ethane) were achieved up to values of 18.7% and 14%, respectively, under the optimized reaction condition of 393K and 3.0 MPa. Selectivity to both compounds is 84% under this condition. The amount of oxidant(H2O2) was optimized to be 279 mmol for the reaction. A low silica to alumina ratio in H-ZSM-5 was favorable for the partial oxidation of ethane. CO2 formation was observed as a deep oxidation product at initial period. Partial oxidation was observed to occur within a short reaction period and was associated with the active oxygen species produced from H2O2 and CO2 formed through the deep oxidation of ethane. Since the yield of CH3COOH from ethane is much higher than that from ethylene, partial oxidation on H-ZSM-5 proceeds through a reaction mechanism different from that of a Wacker-type oxidation reaction.
Keywords:
Acetic acid
Liquid phase oxidation
Ethane
H-ZSM-5
Published in: Applied catalysis A: General (Volume 456, Pages 1-248, 10 April 2013)
Publisher: Elsevier
ISSN Information: 0926-860X
Direct conversion of ethane to acetic acid over H-ZSM-5 using H2O2 in aqueous phase
- Ngày hội Văn hóa đọc lần VI
- Vòng Sơ Khảo Cuộc Thi Đại Sứ Văn Hóa Đọc Năm 2024
- Ngày hội sách “CITTADELLA” khuyến khích và tôn vinh vai trò của sách trong sinh viên Bách khoa
- Cuộc Thi Ảnh “Khoảnh Khắc VNUHCM Libraries”
- Ngày hội văn hóa đọc lần V
- Ngày hội văn hóa đọc lần II
- Ngày hội văn hóa đọc lần IV
- Ngày hội văn hóa đọc lần III
- Tiếp GS Omer Mert Denizci, Trường ĐH Marmara Thổ Nhĩ Kỳ
- Tiếp Cô Claudia Tarzariol Từ The University Of Trento, Italy (Unitrento)
- Tiến sĩ kiều bào Mỹ tặng sách trị giá 150.000 USD cho sinh viên bách khoa
- Khảo sát ý kiến bạn đọc
-
Trực tuyến:24
-
Hôm nay:2856
-
Tuần này:26924
-
Tuần trước:40192
-
Tháng trước:59717
-
Tất cả:4048820