IGNITION CHARACTERISTIC OF ETHANE OXIDATIVE DEHYDROGENATION ON SUPPORTED HETEROPOLY ACID

CHEN Xiaorong; LI Yongdan; KANG Huimin; ZHANG Jiyan; ZHANG Liu

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IGNITION CHARACTERISTIC OF ETHANE OXIDATIVE DEHYDROGENATION ON SUPPORTED HETEROPOLY ACID

更新时间：2025-12-10

- IGNITION CHARACTERISTIC OF ETHANE OXIDATIVE DEHYDROGENATION ON SUPPORTED HETEROPOLY ACID
- CIESC Journal Issue 10, (2001)
- 作者机构：
  
  天津大学化学工程学院催化科学与工程系一碳化工国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 October 2001，
  
  Published：25 October 2001
- 稿件说明：
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CHEN Xiaorong, LI Yongdan, KANG Huimin, et al. IGNITION CHARACTERISTIC OF ETHANE OXIDATIVE DEHYDROGENATION ON SUPPORTED HETEROPOLY ACID[J]. CIESC Journal, 2001, (10).
DOI：

CHEN Xiaorong, LI Yongdan, KANG Huimin, et al. IGNITION CHARACTERISTIC OF ETHANE OXIDATIVE DEHYDROGENATION ON SUPPORTED HETEROPOLY ACID[J]. CIESC Journal, 2001, (10). DOI：

摘要

研究了负载在SiO2 上的杂多酸催化剂的乙烷氧化脱氢活性 .发现在乙烷氧化脱氢反应中存在一个活性起燃温度

当反应温度高于此温度时

反应以气相自由基反应为主 .杂多酸的酸性与乙烷在杂多酸表面的吸附有关

酸性越强

引发自由基反应的起燃温度越高

Abstract

The reaction characteristic of catalytic oxidative dehydrogenation of ethane over a silica supported heteropoly acids is examined.It is observed that there exists a ignition temperature for ethane oxidative dehydrogenation.When the reaction is carried out over this temperature

the reaction is controlled by a free radical gas phase mechanism.The acidity of HPA controls the ethane adsorption on the surface.The stronger the acidity

the higher the ignition temperature of radical reaction.

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