文章摘要
赵世怀.以KMnO4改性炭黑为载体的Pd-Ni催化剂的制备和性能[J].精细化工,2019,36(5):
以KMnO4改性炭黑为载体的Pd-Ni催化剂的制备和性能
Preparation and Properties of Pd-Ni Catalysts Supported by Carbon Black Modified with KMnO4
投稿时间:2018-08-29  修订日期:2018-12-30
DOI:
中文关键词: 直接乙醇燃料电池  阳极催化剂  高锰酸钾  炭黑    
英文关键词: direct ethanol fuel cell  anode catalysts  KMnO4  black carbon  Pd  Ni
基金项目:
作者单位E-mail
赵世怀 天津工业大学 1667628345@qq.com 
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中文摘要:
      以不同浓度的KMnO4溶液预处理的炭黑为载体,通过沉淀共还原法合成了3种Pd1Ni1/ACx (x=3,5,7)催化剂,并将3种催化剂与商业Pd/C催化剂进行了性能对比。用XPS、ICP、XRD和TEM对催化剂了进行表征。结果表明:Pd1Ni1/AC5的Pd负载量(质量分数,下同)最大(3.66%),Pd晶粒的平均粒径最小(4.71 nm),且均匀地分布在KMnO4氧化处理后的碳载体上,活性位点较多;XRD显示,3种Pd1Ni1/ACx催化剂中的Ni均以无定形存在。在电化学性能测试中,3种催化剂均表现出比商业Pd/C更好的电化学稳定性和存活率;其中,Pd1Ni1/AC5电化学活性表面积达62.21 m2/gPd,且乙醇催化活性为1797.85 A/gPd。
英文摘要:
      Three kinds of Pd1Ni1/ACx (x=3,5,7) catalysts were synthesized by precipitation co-reduction method with carbon black pretreated with different concentrations of potassium permanganate solution as the carrier, and the best catalysts for electrocatalytic performance were screened. Commercial Pd/C catalyst was as comparison. The physical characterizations (XPS, ICP and TEM) show that Pd1Ni1/AC5 have the largest Pd loading(3.66%) and the smallest average particle size(4.71 nm) of Pd grains which were homogeneously dispersed on carbon black support, so this catalyst has more active sites than the other two; XRD shows that Ni in all three Pd1Ni1/ACx catalysts exist in an amorphous form. In the electrochemical performance test, all three catalysts showed better electrochemical stability and survival than commercial palladium carbon; Pd1Ni1/AC5 had the largest electrochemical active surface area (62.21 m2/gPd) and the best ethanol catalytic activity (1797.85 A/gPd) which is superior to palladium carbon catalyst.
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