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Effect of Ni Metal Content on Emulsifying Properties of Ni/CNTox Catalysts for Catalytic Conversion of Furfural in Pickering Emulsions
ChemCatChem ( IF 3.8 ) Pub Date : 2020-11-02 , DOI: 10.1002/cctc.202001045 C. Herrera 1, 2 , J. Pinto‐Neira 1, 2 , D. Fuentealba 1 , C. Sepúlveda 2, 3, 4 , A. Rosenkranz 5 , J. L. García‐Fierro 6 , M. González 7 , N. Escalona 1, 2, 8, 9
ChemCatChem ( IF 3.8 ) Pub Date : 2020-11-02 , DOI: 10.1002/cctc.202001045 C. Herrera 1, 2 , J. Pinto‐Neira 1, 2 , D. Fuentealba 1 , C. Sepúlveda 2, 3, 4 , A. Rosenkranz 5 , J. L. García‐Fierro 6 , M. González 7 , N. Escalona 1, 2, 8, 9
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Ni/CNTox catalysts with variable metal content have been prepared to investigate their emulsifying and catalytic properties for the liquid‐phase conversion of furfural. The solid catalysts and emulsions were analyzed by several characterization techniques. The catalytic activity linearly increased with increasing Ni content (up to 10 wt.%) before dropping down again for a Ni content of 15 wt.%. The loss of catalytic activity was attributed to larger emulsion droplets formed by the inhibition of hydrophilic sites. All Ni/CNTox catalysts were highly selective to cyclopentanone as a main product, while several changes regarding secondary products were observed. Ni/CNTox catalysts with a Ni content up to 10 wt.% favor the formation of levulinic acid, while catalysts with a Ni content of 15 wt.% were selective to tetrahydrofurfuryl alcohol. This was attributed to an inhibition of the acid sites thus favoring the catalyst's hydrogenation capacity.
中文翻译：
镍含量对Ni / CNTox催化剂在乳浊液中糠醛催化转化的乳化性能的影响
制备了具有可变金属含量的Ni / CNTox催化剂，以研究其对糠醛液相转化的乳化和催化性能。通过几种表征技术分析了固体催化剂和乳液。催化活性随着镍含量的增加（高达10 wt。％）线性增加，然后再次下降至15 wt。％的镍含量。催化活性的损失归因于通过抑制亲水位点而形成的较大的乳液液滴。所有Ni / CNTox催化剂对作为主要产物的环戊酮具有高度选择性，同时观察到有关副产物的一些变化。Ni含量高达10wt。％的Ni / CNTox催化剂有利于乙酰丙酸的形成，而Ni含量为15wt。％的催化剂对四氢糠醇具有选择性。
更新日期：2020-11-02
中文翻译：
镍含量对Ni / CNTox催化剂在乳浊液中糠醛催化转化的乳化性能的影响
制备了具有可变金属含量的Ni / CNTox催化剂，以研究其对糠醛液相转化的乳化和催化性能。通过几种表征技术分析了固体催化剂和乳液。催化活性随着镍含量的增加（高达10 wt。％）线性增加，然后再次下降至15 wt。％的镍含量。催化活性的损失归因于通过抑制亲水位点而形成的较大的乳液液滴。所有Ni / CNTox催化剂对作为主要产物的环戊酮具有高度选择性，同时观察到有关副产物的一些变化。Ni含量高达10wt。％的Ni / CNTox催化剂有利于乙酰丙酸的形成，而Ni含量为15wt。％的催化剂对四氢糠醇具有选择性。
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