首页> 中文期刊> 《能源化学:英文版》 >Conversion of ethanol to 1,3-butadiene over Ag-ZrO_(2)/SiO_(2) catalysts:The role of surface interfaces

Conversion of ethanol to 1,3-butadiene over Ag-ZrO_(2)/SiO_(2) catalysts:The role of surface interfaces

         

摘要

A series of Ag-ZrO_(2)/SiO_(2) catalysts with different metal-support interfaces were synthesized in an effort to elucidate the roles of specific interfaces in controlling the ethanol to 1,3-butadiene conversion and selectivity.According to the results of detailed characterizations(e.g.CO/pyridine-DRIFTS,XPS,TEM,NH3-TPD,and ^(1)H MAS NMR),it was found that the Ag-O-Si interfaces significantly enhanced the dehydrogenation of ethanol while the presence of ZrO_(2) improved the interaction between Ag and ZrO_(2)/SiO_(2),creating more Ag^(δ+)active sites.The high dispersion of ZrO_(2) on SiO_(2) generated abundant Zr-O-Si interfaces with medium and weak Lewis acidity,promoting the condensation of acetaldehyde to crotonaldehyde.These Zr-O-Si interfaces in close interaction with Ag^(δ+)species played a critical role in the enhanced H transfer during the MPV reduction of crotonaldehyde to crotyl alcohol.The synergies among the interfaces resulted in retarded ethanol dehydration reactivity,balanced ethanol dehydrogenation and condensation reactions,and a subsequent high 1,3-butadiene yield.

著录项

  • 来源
    《能源化学:英文版》 |2021年第3期|P.7-15|共9页
  • 作者单位

    The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA;

    Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 Liaoning China;

    The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USAInstitute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA;

    Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA;

    Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA;

    The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA;

    Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA;

    The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA;

    The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USAInstitute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 物理化学(理论化学)、化学物理学;
  • 关键词

    Ethanol; Catalysis; 1; 3-butadiene; Interface; Lewis acid site;

    机译:乙醇;催化;1,3-丁二烯;界面;路易斯酸遗址;
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