التفاصيل البيبلوغرافية
| العنوان: |
Enhancement of PdV/TiO2 catalyst for low temperature DCM catalytic removal and chlorine poisoning resistance by oxygen vacancy construction. |
| المؤلفون: |
Zhang, Yaping1 (AUTHOR), Li, Guobo1 (AUTHOR), Wu, Peng1 (AUTHOR), Yang, Hongqiang1,2 (AUTHOR) 12095247@chnenergy.com.cn, Wang, Sheng1,3 (AUTHOR) wangsheng9999@126.com, Shen, Kai1 (AUTHOR), Wang, Ling1 (AUTHOR) |
| المصدر: |
Chemical Engineering Science. Dec2022, Vol. 264, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*LOW temperatures, *OXYGEN, *CATALYSTS, *CATALYST poisoning, *TITANIUM dioxide, *CHLORINE, *RUTILE, *DICHLOROMETHANE |
| مستخلص: |
• Abundant oxygen vacancy was formed in transformation process of part anatase TiO 2 to rutile phase. • Pd 0.12 V 4 /TiO 2 -Vo catalyst possessed rich acid site, higher O ads ratio and better oxygen mobility. • A better Cl resistance for Pd 0.12 V 4 /TiO 2 -Vo catalyst was presented. TiO 2 -Vo support with abundant oxygen vacancy was prepared by hydrothermal method, purchased TiO 2 -P for comparison, and Pd 0.12 V 4 /TiO 2 catalysts with different TiO 2 structures were prepared to investigate catalytic oxidation for dichloromethane (DCM). Pd 0.12 V 4 /TiO 2 -Vo catalyst showed excellent low temperature DCM removal efficiency, T 90 of which reduced to 290 ℃, and Cl resistance was maintained in 40 h. Abundant oxygen vacancy of TiO 2 -Vo was formed in transformation process of part anatase TiO 2 to rutile phase. The obtained Pd 0.12 V 4 /TiO 2 -Vo catalyst possessed rich acid sites, higher adsorbed oxygen (O ads) ratio and better oxygen mobility, which inhibited loss of active components and improved DCM removal efficiency. DCM removal efficiency of Pd 0.12 V 4 /TiO 2 catalyst was reduced by HCl, while negative effect in the way of weakening competitive adsorption between HCl and DCM, that would be reduced by TiO 2 supports modification. The present work is favorable for further DCM removal catalyst anti-Cl poisoning modification and application in manufacture industry. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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