Enhanced activity and alkali metal resistance in vanadium SCR catalyst via co-modification with Mo and Sb

Wu Peng; Shen Kai; Liu YiliangZhang YapingLi GouboYang HongqiangWang Sheng

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Enhanced activity and alkali metal resistance in vanadium SCR catalyst via co-modification with Mo and Sb

机译：增强的活动和碱金属阻力通过与莫co-modification钒SCR催化剂和某人

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A series of V0.04W0.03MoxSby/TiO2 catalysts was prepared by impregnating various contents of Mo and Sb. The optimum V0.04W0.03Mo0.015Sb0.018/TiO2 catalyst exhibited enhanced SCR activity in a wide temperature range of 160-320 degrees C, together with excellent SO2 and H2O resistance. The addition of an appropriate amount of Mo and Sb could strengthen the alkali metal resistance of the V0.04W0.03/TiO2 catalyst. The Mo and Sb co-modified catalyst exhibited a large specific surface area. The XPS and EPR results confirmed the presence of abundant V4+ and O-beta on the modified catalyst. The TPR and TPD experiments revealed that the enhanced low-temperature redox ability and improved surface acidity played a key role in the superior catalytic activity and alkali metal resistance over the V0.04W0.03Mo0.015Sb0.018/TiO2 catalyst. The in situ DRIFTS results revealed that the reaction mechanism followed the E-R mechanism over the V0.04W0.03Mo0.015Sb0.018/TiO2 catalyst at 180 degrees C. Additionally, the inhibitory effect of K was mainly attributed to the destruction of the redox ability and surface acidity of the catalyst.

机译：一系列V0.04W0.03MoxSby /二氧化钛催化剂由浸渍各种内容的密苏里州和某人最佳V0.04W0.03Mo0.015Sb0.018 /二氧化钛催化剂表现出增强的可控硅活动160 - 320摄氏度的温度范围宽,与优秀的二氧化硫和水阻力。添加适量的密苏里州某人可以加强碱金属阻力V0.04W0.03 /二氧化钛催化剂。co-modified展出大量特定的催化剂表面积。大量存在的V4 +和O-beta修改后的催化剂。显示增强的低温氧化还原能力和改善表面酸度扮演了一个关键优越的催化活性和作用在碱金属阻力V0.04W0.03Mo0.015Sb0.018 /二氧化钛催化剂。原位漫反射红外光谱结果显示,反应机制的e - r机制V0.04W0.03Mo0.015Sb0.018 /二氧化钛催化剂,享年180岁度c。此外,抑制作用K主要是归因于的毁灭氧化还原能力和表面酸性催化剂。

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来源
《Catalysis science & technology》 |2021年第12期|4115-4132|共18页
作者
Wu Peng; Shen Kai; Liu YiliangZhang YapingLi GouboYang HongqiangWang Sheng;
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作者单位

State Power Environm Protect Res Inst, Nanjing 210031, Jiangsu, Peoples R China;

Southeast Univ, Sch Energy & Environm, Key Lab Energy Thermal Convers & Control, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China;

China Energy Jiangsu Power Co Ltd, Nanjing 210014, Jiangsu, Peoples R China;

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正文语种英语
中图分类汉语教学;
关键词
Surface acidity; antimony; MolybdenumReaction MechanismsCatalystsalkali metalsCatalyst activity;

机译：表面酸性;锑;MolybdenumReactionMechanismsCatalystsalkali metalsCatalyst活动;

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2. Enhancement in Activity of a Vanadium Catalyst for the Oxidation of Sulfur Dioxide by Radio Frequency Plasma During the Preparation Process [J] . Zhenxing Chen, Honggui Li, Lingsen Wang 天然气化学（英文版） . 2003,第003期
3. Activity Enhancement of Vanadium Catalysts with Ultrasonic Preparation Process for the Oxidation of Sulfur Dioxide [J] . Zhenxing Chen, Honggui Li, Lingsen Wang 天然气化学（英文版） . 2003,第002期
4. Influence of alkali metal doping on surface properties and catalytic activity/selectivity of CaO catalysts in oxidative coupling of methane [J] . V.H.Rane, S.T.Chaudhari, V.R.Choudhary 天然气化学（英文版） . 2008,第004期
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机译：Enhanced activity of an In-Fe2O3/H-Zsm-5 catalyst for NO reduction with methane

Enhanced activity and alkali metal resistance in vanadium SCR catalyst via co-modification with Mo and Sb

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