钙钛矿型催化剂La0.8M0.2CoO3(M=Sr,Ce,Ba,Ca) 催化燃烧VOCs的活性与抗硫性研究

曹利, 曹爽, 黄学敏, 杨全. 钙钛矿型催化剂La0.8M0.2CoO3(M=Sr,Ce,Ba,Ca) 催化燃烧VOCs的活性与抗硫性研究[J]. 环境化学, 2011, 30(9): 1539-1545.
引用本文: 曹利, 曹爽, 黄学敏, 杨全. 钙钛矿型催化剂La0.8M0.2CoO3(M=Sr,Ce,Ba,Ca) 催化燃烧VOCs的活性与抗硫性研究[J]. 环境化学, 2011, 30(9): 1539-1545.
CAO Li, CAO Shuang, HUANG Xuemin, YANG Quan. ACTIVITY AND SO2-POISONING RESISTANCE OF La0.8M0.2CoO3 (M=Sr,Ce,Ba,Ca) PEROVSKITE CATALYSTS FOR VOCS CATALYTIC COMBUSTION[J]. Environmental Chemistry, 2011, 30(9): 1539-1545.
Citation: CAO Li, CAO Shuang, HUANG Xuemin, YANG Quan. ACTIVITY AND SO2-POISONING RESISTANCE OF La0.8M0.2CoO3 (M=Sr,Ce,Ba,Ca) PEROVSKITE CATALYSTS FOR VOCS CATALYTIC COMBUSTION[J]. Environmental Chemistry, 2011, 30(9): 1539-1545.

钙钛矿型催化剂La0.8M0.2CoO3(M=Sr,Ce,Ba,Ca) 催化燃烧VOCs的活性与抗硫性研究

  • 基金项目:

    教育部高等学校博士学科点专项科研基金(200807030007)资助.

ACTIVITY AND SO2-POISONING RESISTANCE OF La0.8M0.2CoO3 (M=Sr,Ce,Ba,Ca) PEROVSKITE CATALYSTS FOR VOCS CATALYTIC COMBUSTION

  • Fund Project:
  • 摘要: 用柠檬酸溶胶-凝胶法制备了La0.8M0.2CoO3(M=Sr,Ce,Ba,Ca)4种钙钛矿型复合氧化物催化剂.甲苯催化燃烧活性测试表明,4种催化剂均具有很好的催化活性,转化率达到90%时反应温度都在340 ℃以下,比LaCoO3下降20 ℃-70 ℃,催化性能依次为:La0.8Sr0.2CoO3 > La0.8Ce0.2CoO3 >La0.8Ca0.2CoO3 > La0.8Ba0.2CoO3.抗SO2性能测试结果表明,4种催化剂都具有一定的抗硫性能,ΔT50%在60 ℃以内,大小依次为:La0.8Ce0.2CoO3 > La0.8Sr0.2CoO3 > La0.8Ba0.2CoO3 > La0.8Ca0.2CoO3.通过XRD、XPS和SEM等表征可知经含硫气体作用后中毒的催化剂钙钛矿结构有所破坏,表面均不同程度地生成了金属硫酸盐、硫化物等新物质,在催化剂表面形成屏蔽效应致使催化剂失活.
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  • [1] Misono M. Recent progress in the practical applications of heteropolyacid and perovskite catalysts: Catalytic technology for the sustainable society [J]. Catalysis Today,2009,144(3/4) :285-291
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    [8] Rousseau S, Loridant S, Delichere P, et al. La(1-x)SrxCo(1-y)FeyO3 perovskites prepared by sol-gel method: Characterization and relationships with catalytic properties for total oxidation of toluene[J]. Applied Catalysis B: Environmental, 2009, 88(3/4):438-447
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曹利, 曹爽, 黄学敏, 杨全. 钙钛矿型催化剂La0.8M0.2CoO3(M=Sr,Ce,Ba,Ca) 催化燃烧VOCs的活性与抗硫性研究[J]. 环境化学, 2011, 30(9): 1539-1545.
引用本文: 曹利, 曹爽, 黄学敏, 杨全. 钙钛矿型催化剂La0.8M0.2CoO3(M=Sr,Ce,Ba,Ca) 催化燃烧VOCs的活性与抗硫性研究[J]. 环境化学, 2011, 30(9): 1539-1545.
CAO Li, CAO Shuang, HUANG Xuemin, YANG Quan. ACTIVITY AND SO2-POISONING RESISTANCE OF La0.8M0.2CoO3 (M=Sr,Ce,Ba,Ca) PEROVSKITE CATALYSTS FOR VOCS CATALYTIC COMBUSTION[J]. Environmental Chemistry, 2011, 30(9): 1539-1545.
Citation: CAO Li, CAO Shuang, HUANG Xuemin, YANG Quan. ACTIVITY AND SO2-POISONING RESISTANCE OF La0.8M0.2CoO3 (M=Sr,Ce,Ba,Ca) PEROVSKITE CATALYSTS FOR VOCS CATALYTIC COMBUSTION[J]. Environmental Chemistry, 2011, 30(9): 1539-1545.

钙钛矿型催化剂La0.8M0.2CoO3(M=Sr,Ce,Ba,Ca) 催化燃烧VOCs的活性与抗硫性研究

  • 1. 西安建筑科技大学环境与市政工程学院, 西安, 710055
基金项目:

教育部高等学校博士学科点专项科研基金(200807030007)资助.

摘要: 用柠檬酸溶胶-凝胶法制备了La0.8M0.2CoO3(M=Sr,Ce,Ba,Ca)4种钙钛矿型复合氧化物催化剂.甲苯催化燃烧活性测试表明,4种催化剂均具有很好的催化活性,转化率达到90%时反应温度都在340 ℃以下,比LaCoO3下降20 ℃-70 ℃,催化性能依次为:La0.8Sr0.2CoO3 > La0.8Ce0.2CoO3 >La0.8Ca0.2CoO3 > La0.8Ba0.2CoO3.抗SO2性能测试结果表明,4种催化剂都具有一定的抗硫性能,ΔT50%在60 ℃以内,大小依次为:La0.8Ce0.2CoO3 > La0.8Sr0.2CoO3 > La0.8Ba0.2CoO3 > La0.8Ca0.2CoO3.通过XRD、XPS和SEM等表征可知经含硫气体作用后中毒的催化剂钙钛矿结构有所破坏,表面均不同程度地生成了金属硫酸盐、硫化物等新物质,在催化剂表面形成屏蔽效应致使催化剂失活.

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