正丁烷选择氧化中V-P-O催化剂的晶相和选择性

高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (2): 168.

正丁烷选择氧化中V-P-O催化剂的晶相和选择性

林培琰, 李和义, 石文俊, 郑寒星, 彭坚, 单绍纯

中国科学技术大学近代化学系

收稿日期:1987-07-31 出版日期:1989-02-24 发布日期:1989-02-24
通讯作者: 林培琰

Selectivity and Crystal Phase of V-P-O Catalyst for Selective Oxidation of n-Butane

Lin Peiyan, Li Heyi, Shi Wenjun, Zheng Hanxing, Peng Jian, Shan Shaochun

Department of Modern Chemistry, China University of Science and Technology, Hefei

Received:1987-07-31 Online:1989-02-24 Published:1989-02-24

摘要/Abstract

摘要： 测定了一系列V-P-O催化剂的丁烷选择氧化总转化率、顺酐选择性和生成速率。用XRD和FT-IR仪对催化剂进行晶相分析。用化学滴定法测定催化剂中钒的平均价态。结果表明,晶形良好的(VO)₂P₂O₂和部分α-VOSO₄的混合物可能是丁烷选择氧化的必要活性相。

关键词: 丁烷选择氧化, V-P-O催化剂, 顺酐选择性, 钒的平均价态

Abstract: A series of V-P-Ocatalysts in the range of P/V ratio=0.9, 1.0, 1.1, with different calcination temperature and calcination atmosphere for n-butane oxidation to maleic anhydride were prepared by the method of benzyl alcohol reduction. Crystal phases of the catalysts were determined by XRD and FT-IR. The average valence of vanadium in the catalysts was determined by chemical titration. It was considered that the main factor which was related to seclectivity is the formation of crystalline catalysts, the mixed crystal of (VO)₂P₂O₇and a part of a-VOPO₄in good crystallinity is active phase in the redox dynamic process. The reaction is the reaction of structure sensitivity.

Key words: Selective oxidation of butane, V-P-O catalysts, Selectivity of maleic anhydride, Average valence of vanadium

TrendMD:

林培琰, 李和义, 石文俊, 郑寒星, 彭坚, 单绍纯. 正丁烷选择氧化中V-P-O催化剂的晶相和选择性. 高等学校化学学报, 1989, 10(2): 168.

Lin Peiyan, Li Heyi, Shi Wenjun, Zheng Hanxing, Peng Jian, Shan Shaochun . Selectivity and Crystal Phase of V-P-O Catalyst for Selective Oxidation of n-Butane. Chem. J. Chinese Universities, 1989, 10(2): 168.