钒氧化物修饰杂原子B-Beta分子筛催化剂的制备及其对丙烷脱氢的催化性能研究

顾建峰; 臧云浩; 高峰

doi:10.12187/2020.01.005

钒氧化物修饰杂原子B-Beta分子筛催化剂的制备及其对丙烷脱氢的催化性能研究

东莞理工学院生态环境与建筑工程学院, 广东东莞 523808

作者简介: 顾建峰(1982-),男,河南省商丘市人,东莞理工学院高级工程师,博士,主要研究方向为分子筛催化剂的制备与应用.;

基金项目: 东莞理工学院博士科研启动专项项目（GC300501-069）
中图分类号: TB324

Study on preparation of vanadium oxide modified heteroatom B-Beta molecular sieve catalyst and its catalytic performance on propane dehydrogenation

School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
Received Date: 2019-12-03

CLC number: TB324

摘要: 以工业柱层硅胶、硼酸等为主要原料，采用水热法合成了NaB-Beta，NaB-ZSM-5，Si-Beta，HB-Beta和HB-ZSM-5 5种形式的杂原子分子筛；以其为载体，采用浸渍法负载钒氧化物VO_x制备了一系列丙烷脱氢催化剂样品，并对其丙烷脱氢催化性能和结构进行分析和表征.结果表明：以HB-Beta分子筛为载体、负载8%（质量分数）的VO_x制得的样品（8VO_x/HB-Beta）丙烷脱氢的催化活性最好，在600℃条件下反应30 min，丙烷转化率为43%，丙烯选择性为78%，丙烯收率为34%；HB-Beta分子筛更有利于钒氧化物VO_x的分散，进而形成单分散的钒氧化物VO_x.这些高分散的钒氧物种和载体一定的酸量，是该类丙烷脱氢催化剂具有高活性的关键因素.
- 杂原子B-Beta分子筛 /
- 钒氧化物 /
- 丙烷脱氢反应 /
- 负载
Abstract: Using columnar silica gel and boric acid as the main raw materials, five types of heteroatom molecular sieves, NaB-Beta, NaB-ZSM-5, Si-Beta, HB-Beta and HB-ZSM-5 were synthesized by hydrothermal method. As a carrier, a series of propane dehydrogenation catalyst samples were prepared by impregnating VO_x, and their propane dehydrogenation catalytic performance and structure were analyzed and characterized. The results showed that the sample (8VO_x/HB-Beta) prepared with HB-Beta molecular sieve as the carrier and 8% (mass fraction) of VO_x had the best catalytic activity for propane dehydrogenation. The reaction was carried out at 600℃for 30 min,the conversion rate was 43%, the propylene selectivity was 78%, and the propylene yield was 34%. HB-Beta molecular sieve was more conducive to the dispersion of vanadium oxide VO_x, and then monodispersed vanadium oxide VO_x was formed.These highly dispersed vanadium species and a certain amount of acid on the carrier were the key factors for the high activity of this type of propane dehydrogenation catalyst.
- heteroatom B-Beta molecular sieve /
- vanadium oxide /
- propane dehydrogena-tion /
- loading
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钒氧化物修饰杂原子B-Beta分子筛催化剂的制备及其对丙烷脱氢的催化性能研究

作者简介: 顾建峰(1982-),男,河南省商丘市人,东莞理工学院高级工程师,博士,主要研究方向为分子筛催化剂的制备与应用.;

Study on preparation of vanadium oxide modified heteroatom B-Beta molecular sieve catalyst and its catalytic performance on propane dehydrogenation

计量

通讯作者: 陈斌, bchen63@163.com

钒氧化物修饰杂原子B-Beta分子筛催化剂的制备及其对丙烷脱氢的催化性能研究

作者简介:顾建峰(1982-),男,河南省商丘市人,东莞理工学院高级工程师,博士,主要研究方向为分子筛催化剂的制备与应用.

English Abstract

Study on preparation of vanadium oxide modified heteroatom B-Beta molecular sieve catalyst and its catalytic performance on propane dehydrogenation

目录

钒氧化物修饰杂原子B-Beta分子筛催化剂的制备及其对丙烷脱氢的催化性能研究

作者简介: 顾建峰(1982-),男,河南省商丘市人,东莞理工学院高级工程师,博士,主要研究方向为分子筛催化剂的制备与应用.;

Study on preparation of vanadium oxide modified heteroatom B-Beta molecular sieve catalyst and its catalytic performance on propane dehydrogenation

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通讯作者: 陈斌, bchen63@163.com

钒氧化物修饰杂原子B-Beta分子筛催化剂的制备及其对丙烷脱氢的催化性能研究

作者简介:顾建峰(1982-),男,河南省商丘市人,东莞理工学院高级工程师,博士,主要研究方向为分子筛催化剂的制备与应用.

English Abstract

Study on preparation of vanadium oxide modified heteroatom B-Beta molecular sieve catalyst and its catalytic performance on propane dehydrogenation

目录