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Epoxidation of trans-stilbene and cis-cyclooctene over mesoporous vanadium catalysts : support composition and pore structure effect

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Epoxidation of trans-stilbene and cis-cyclooctene over mesoporous vanadium catalysts : support composition and pore structure effect
นักวิจัย : Guo, Zhen , Zhou, Chunmei , Hu, Shuangquan , Chen, Yuanting , Jia, Xinli , Lau, Raymond , Yang, Yanhui
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Guo, Z., Zhou, C., Hu, S., Chen, Y., Jia, X., Lau, R., et al. (2012). Epoxidation of trans-stilbene and cis-cyclooctene over mesoporous vanadium catalysts: Support composition and pore structure effect. Applied Catalysis A: General, 419-420, 194-202. , 0926-860X , http://hdl.handle.net/10220/10771 , http://dx.doi.org/10.1016/j.apcata.2012.01.029
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Applied catalysis A : general
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Vanadium supported on mesoporous molecular sieve catalysts with different pore diameters and structures (V-MCM-41, V-SBA-15, and V-TUD-1) were synthesized using a post-synthesis grafting method. The physicochemical properties of these as-calcined mesoporous vanadium catalysts were investigated by several techniques including N2-physisorption, X-ray diffraction, UV–vis, UV–Raman, and X-ray absorption near-edge structure spectroscopies. The characterization results revealed that the vanadium domains were mainly isolated VO4 units with a distorted tetrahedral coordination. Epoxidation of trans-stilbene and cis-cyclooctene were carried out to determine the influence of pore size and pore structure on the catalytic activity in a liquid-phase reaction. The best catalytic performance was achieved over the V-TUD-1 catalyst. It was suggested that the unique open 3D sponge-like mesostructure of the TUD-1 support can effectively suppress the pore diffusion resistance on bulky reactants and allow the good accessibility of reactants to the active sites embedded on the pore wall surfaces of mesoporous channels.

บรรณานุกรม :
Guo, Zhen , Zhou, Chunmei , Hu, Shuangquan , Chen, Yuanting , Jia, Xinli , Lau, Raymond , Yang, Yanhui . (2555). Epoxidation of trans-stilbene and cis-cyclooctene over mesoporous vanadium catalysts : support composition and pore structure effect.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Guo, Zhen , Zhou, Chunmei , Hu, Shuangquan , Chen, Yuanting , Jia, Xinli , Lau, Raymond , Yang, Yanhui . 2555. "Epoxidation of trans-stilbene and cis-cyclooctene over mesoporous vanadium catalysts : support composition and pore structure effect".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Guo, Zhen , Zhou, Chunmei , Hu, Shuangquan , Chen, Yuanting , Jia, Xinli , Lau, Raymond , Yang, Yanhui . "Epoxidation of trans-stilbene and cis-cyclooctene over mesoporous vanadium catalysts : support composition and pore structure effect."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Guo, Zhen , Zhou, Chunmei , Hu, Shuangquan , Chen, Yuanting , Jia, Xinli , Lau, Raymond , Yang, Yanhui . Epoxidation of trans-stilbene and cis-cyclooctene over mesoporous vanadium catalysts : support composition and pore structure effect. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.