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Hydrogen production by aqueous-phase reforming of ethylene glycol over a Ni/Zn/Al derived hydrotalcite catalyst

机译:通过Ni / Zn / Al衍生的水滑石催化剂对乙二醇水相重整的氢气产生

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摘要

Ni/Zn/Al hydrotalcites (Ni/Zn/Al-HT) with different Ni/Zn ratios have been prepared by a coprecipitation method. The properties and microstructure of Ni/Zn/Al-HT precursors and derived catalysts were characterized by X-ray diffraction (XRD), H-2-temperature programmed reduction (TPR), N-2 physical adsorption analysis (BET), scanning electron microscopy (SEM) and particle size distribution. The results exhibited that the as-prepared samples consisted of a hydrotalcite phase and a ZnO phase, and ZN(2+) was introduced into the layers. At the ratio of Ni/Zn = 1, the ZnAl2O4 phase emerged after calcination; Ni still remained in its original state after reaction, and ZnO always existed during the whole process. In aqueous-phase reforming (APR) of ethylene glycol, the H-2 production rate over Ni/Zn/Al-HT was high, and the selectivity of H-2 can almost reach 100% with a high conversion rate exceeding 99%.
机译:通过共沉淀法制备具有不同Ni / Zn比的Ni / Zn / Al-HT)(Ni / Zn / Al-HT)。 Ni / Zn / Al-HT前体和衍生催化剂的性质和微观结构通过X射线衍射(XRD),H-2 - 温度编程减少(TPR),N-2物理吸附分析(BET),扫描电子 显微镜(SEM)和粒度分布。 结果表明,由水滑石相和ZnO相和Zn(2+)组成的制备样品被引入层中。 在Ni / Zn = 1的比例下,煅烧后Znal2O4相出现; NI仍然在反应后仍处于原始状态,并且在整个过程中始终存在ZnO。 在乙二醇的水相重整(APR)中,H-2在Ni / Zn / Al-HT上的生产速率高,H-2的选择性几乎达到100%,高转化率超过99%。

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  • 来源
    《RSC Advances》 |2015年第74期|共7页
  • 作者单位

    Tianjin Univ State Key Lab Engines Sch Environm Sci &

    Engn Tianjin 300072 Peoples R China;

    Tianjin Univ State Key Lab Engines Sch Environm Sci &

    Engn Tianjin 300072 Peoples R China;

    Tianjin Univ State Key Lab Engines Sch Environm Sci &

    Engn Tianjin 300072 Peoples R China;

    Tianjin Univ State Key Lab Engines Sch Environm Sci &

    Engn Tianjin 300072 Peoples R China;

    Tianjin Univ State Key Lab Engines Sch Environm Sci &

    Engn Tianjin 300072 Peoples R China;

    Tianjin Univ State Key Lab Engines Sch Environm Sci &

    Engn Tianjin 300072 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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