Exploration of strong metal-support interaction in zirconia supported catalysts for toluene oxidation
Exploration of strong metal-support interaction in zirconia supported catalysts for toluene oxidation
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氧化锆负载甲苯氧化催化剂中强金属-载体相互作用的探索
DOI:
10.1016/j.apcatb.2019.118355
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发表时间:
2020-04
期刊:
影响因子:
--
通讯作者:
Ge Maofa
中科院分区:
文献类型:
--
作者:
Yang Xueqin;Ma Xiuyun;Yu Xiaolin;Ge Maofa
Strong metal-support interaction (SMSI) can greatly affect the catalytic performance in various reactions. Herein, we demonstrated the formation of distinct SMSI in zirconia supported catalysts by changing the types of supported precious metals. Different from Pt/ZrO2catalyst with interfacial SMSI (I-SMSI), Pd species in Pd/ZrO2catalyst were more prone to generate the SMSI with Brønsted acid sites (B-SMSI) rather than interfacial structure. The formation of B-SMSI in Pd/ZrO2catalyst was proven by the dramatic decrease in the Brønsted acid sites, which resulted in the high cationic Pd2+content. Owing to the formation of B-SMSI, Pd/ZrO2catalyst even possessed a comparable catalytic activity with Pt/ZrO2catalysts for toluene oxidation. Moreover, Pd/ZrO2catalyst with B-SMSI also exhibited excellent water and sulphur resistance together with high-temperature stability for toluene oxidation, which has great potential in practical application.In situDRIFTS spectra revealed that the two types of SMSI could activate oxygen species, accelerate the toluene oxidation and improve the catalytic efficiency.
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影响因子:
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通讯作者:
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