典型文献
Influence of Pd deposition pH value on the performance of Pd-CuO/SiO2 catalyst for semi-hydrogenation of 2-methyl-3-butyn-2-ol(MBY)
文献摘要：
The selective hydrogenation of C≡C to C=C bonds is an important step,yet remains to be a great chal-lenge in chemical industry.In this study,we have revealed the influence of Pd deposition pH value on the catalytic performance of Pd-CuO/SiO2 catalyst for the semi-hydrogenation of 2-methyl-3-butyn-2-ol(MBY).Trace amount of Pd (about 500 ppm) was loaded via deposition-reduction method on CuO/SiO2 support by using H2PdCl4 solution as precursor and NaBH4 as reductant,respectively.The pH value at which Pd was deposited was adjusted to about 5 and 7 by adding NaOH solution.The obtained catalysts were characterized by several techniques including XRD,TEM,H2-TPR,etc.In the case of pH value of 5,the CuO was partially dissolved during the deposition and then co-reduced with Pd2+ by NaBH4,forming PdCu alloy structure in sub-nanometer.In contrast,no PdCu alloy structure was observed when pH value was 7.The kinetics of MBY semi-hydrogenation over both catalysts were compared.The former PdCu al-loy catalyst showed very high selectivity towards the semi-hydrogenation of MBY due to its low activity in hydrogenation of C=C bond in 2-methyl-3-buten-2-ol (MBE).The results herein demonstrated that the pH value where Pd was deposited played a crucial role in determining the catalytic performance of PdCu catalyst.
文献关键词：
中图分类号：
作者姓名：
Jiamin Xu;Xiaowen Guo;Yejun Guan;Peng Wu
作者机构：
Shanghai Key Laboratory of Green Chemistry and Chemical Processes,East China Normal University,Shanghai 200062,China
文献出处：
引用格式：
[1]Jiamin Xu;Xiaowen Guo;Yejun Guan;Peng Wu-.Influence of Pd deposition pH value on the performance of Pd-CuO/SiO2 catalyst for semi-hydrogenation of 2-methyl-3-butyn-2-ol(MBY))[J].中国化学快报（英文版）,2022(01):349-353
A类：
butyn,MBY,buten
B类：
Influence,deposition,value,performance,CuO,SiO2,semi,hydrogenation,methyl,selective,bonds,important,step,yet,remains,be,great,chal,lenge,chemical,industry,this,study,have,revealed,influence,catalytic,Trace,amount,about,ppm,was,loaded,via,reduction,method,support,by,using,H2PdCl4,solution,precursor,NaBH4,reductant,respectively,which,deposited,adjusted,adding,NaOH,obtained,catalysts,were,characterized,several,techniques,including,TEM,TPR,etc,case,partially,dissolved,during,then,reduced,Pd2+,forming,PdCu,alloy,structure,sub,nanometer,contrast,observed,when,kinetics,over,both,compared,former,showed,very,high,selectivity,towards,due,its,low,activity,MBE,results,herein,demonstrated,that,where,played,crucial,role,determining
AB值：
0.463692
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
