Interplay of Support Chemistry and Reaction Conditions on Copper Catalyzed Methanol Steam Reforming.

Interplay of Support Chemistry and Reaction Conditions on Copper Catalyzed Methanol Steam Reforming.
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DOI:
10.1021/acs.iecr.8b02488
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发表时间:
2018-11-14
影响因子:
4.2
通讯作者:
Faria J
Faria J
中科院分区:
工程技术3区
文献类型:
--
作者:
Díaz-Pérez MA;Moya J;Serrano-Ruiz JC;Faria J

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研究了以SiO_2、Al_2O_3-SiO_2、金红石型TiO_2和Cu/TiO_2为载体的一系列Cu催化剂的甲醇气相重整反应性能。Cu/SiO_2催化剂的活性最高(5493 μmol H_2min ~(-1)·gcat ~(-1)),其次是Cu/TiO_2金红石型、Cu/Al_2O_3-SiO_2型和Al_2O_3型。反应后的XRD和HRTEM表征表明,在Cu/SiO2上,在反应期间发生显著的烧结。与此相反,Cu/TiO 2金红石和金红石的颗粒尺寸增长不太明显,这可能与Cu团簇和TiO 2之间的相互作用。热重分析表明,积炭是Cu/Al_2O_3-SiO_2催化剂失活的主要原因。
A series of Cu catalysts supported on SiO2, Al2O3–SiO2, TiO2 rutile, and Cu/TiO2 anatase metal oxides has been studied for methanol reforming in the vapor phase. The highest activity was obtained on Cu/SiO2 catalysts (5493 μmol H2 min–1·gcat–1) followed by Cu/TiO2 rutile, Cu/Al2O3–SiO2, and anatase. XRD and HRTEM characterization after reaction revealed that on Cu/SiO2 significant sintering occurred during reaction. In contrast, the particle size growth on Cu/TiO2 rutile and anatase was less pronounced, which could be associated with the interaction between Cu clusters and TiO2. Characterization by TGA showed that on Cu/Al2O3–SiO2 the main cause of deactivation was coke deposition.
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