本文關(guān)鍵詞： 二甲醚水蒸氣重整 制氫 層狀硅酸銅 Cu/SiO_ 蒸氨法　出處：《物理化學(xué)學(xué)報》2017年08期 　論文類型：期刊論文

【摘要】：采用蒸氨法制備出不同Cu負(fù)載量的xCu/SiO_2-AE催化劑,并將其用于二甲醚水蒸氣重整制氫反應(yīng)。當(dāng)Cu負(fù)載量為30%(w)時,30Cu/SiO_2-AE催化劑表現(xiàn)出最佳的催化性能。結(jié)果顯示,該方法制備的催化劑表面具有高度分散的CuO和層狀硅酸銅物相,經(jīng)還原后分別形成Cu~0和Cu~+物種。與常規(guī)浸漬法制備的30Cu/SiO_2-IM催化劑相比,蒸氨法制備的30Cu/SiO_2-AE催化劑具有優(yōu)異的催化穩(wěn)定性和活性,這與其獨特的層狀結(jié)構(gòu)和表面Cu~0與Cu~+之間的協(xié)同作用相關(guān)。
[Abstract]:XCu/SiO_2-AE catalysts with different Cu loading amounts were prepared by ammonia evaporation method and used in the steam reforming of dimethyl ether to produce hydrogen. When Cu loading was 30 wW, the catalyst of 30Cu / SiO2-AE exhibited the best catalytic performance. The surface of the catalyst prepared by this method has highly dispersed CuO and layered copper silicate phases. After reduction, Cu~0 and Cu ~ species are formed respectively, which are compared with 30Cu / Sio _ 2-IM catalysts prepared by conventional impregnation method. The catalytic stability and activity of 30Cu / SiO _ 2-AE catalyst prepared by ammonia evaporation method is excellent, which is related to its unique layered structure and the synergistic effect of surface Cu~0 and Cu~.
【作者單位】： 天津化學(xué)化工協(xié)同創(chuàng)新中心天津市應(yīng)用催化科學(xué)與工程重點實驗室天津大學(xué)化工學(xué)院;河南工業(yè)大學(xué)化學(xué)化工學(xué)院;
【基金】：國家自然科學(xué)基金(21476159,21476160) 天津市自然科學(xué)基金(15JCZDJC37400,15JCYBJC23000)~~
【分類號】：O643.36;TQ116.2

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