蛭石负载铂纳米粒子电催化氧化乙醇性能研究
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摘要
为了解决直接乙醇燃料电池中乙醇分子在阳极反应活性低的问题,本文采用新疆特色资源蛭石作为催化剂的载体,负载高活性的Pt纳米粒子,制备蛭石基铂系催化剂,应用于碱性直接乙醇燃料的阳极。实验结果表明,所制备的催化剂在碱性介质中对乙醇的电催化氧化反应表现出较高的催化活性,达到商品化Pt/C性能的76. 7%,并在长时间循环后的稳定性高于Pt/C,且所制备的催化剂能提高乙醇氧化动力学过程,降低阳极催化剂制备成本。
In order to solve the problem of low reaction activity of ethanol molecules in direct ethanol fuel cells at the anode, using the characteristic resource vermiculite of Xinjiang as catalyst carrier and supported platinum nanoparticles with high activity, vermiculite based platinum catalyst was prepared. It was used as anode for alkaline direct ethanol fuel. The experimental results show that the prepared catalyst exhibits high catalytic activity for ethanol electro-catalytic oxidation in alkaline medium, reaching 76. 7% of the commercial carbon supported platinum performance, and the stability of the prepared catalyst is higher than that of carbon supported platinum after long cycle. And the catalyst can improve the kinetics of ethanol oxidation and reduce the cost of preparation of anode catalyst.
In order to solve the problem of low reaction activity of ethanol molecules in direct ethanol fuel cells at the anode, using the characteristic resource vermiculite of Xinjiang as catalyst carrier and supported platinum nanoparticles with high activity, vermiculite based platinum catalyst was prepared. It was used as anode for alkaline direct ethanol fuel. The experimental results show that the prepared catalyst exhibits high catalytic activity for ethanol electro-catalytic oxidation in alkaline medium, reaching 76. 7% of the commercial carbon supported platinum performance, and the stability of the prepared catalyst is higher than that of carbon supported platinum after long cycle. And the catalyst can improve the kinetics of ethanol oxidation and reduce the cost of preparation of anode catalyst.
引文
[1]侯全会,汤东,熊永莲.异型直接乙醇燃料电池的制备及电性能研究[J].化工新型材料,2018,46(2):139-142.
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[10]王旭红,马冠云,阮世栋.直接乙醇燃料电池阳极催化剂载体的研究进展[J].化工新型材料,2015,43(1):21-23.
[11]蔡志泉,张敏,孟煜阳,等.Pt纳米粒子/Pd纳米线复合材料对乙醇的电催化氧化研究[J].化学研究与应用,2014,26(4):572-576.
[12]朱昱,周燕琴,魏金栋,等.直接乙醇燃料电池电催化研究进展[J].现代化工,2016,36(4):18-24.
[13]赵新生,孙公权,姜鲁华.碳纳米管担载PtSn阳极催化剂对乙醇的电催化氧化性能研究[N].高等学校化学学报,2005(07).
[2]麻卓然,付万发.玉米秸秆发酵制备乙醇的预处理技术综述[J].内蒙古师范大学学报,2018,47(5):426-431.
[3]张林林.不同来源菊粉酶基因Saccharomyces sp.菌株中的表达和乙醇生产[D].青岛:中国海洋大学,2015.
[4]孙慧,高张丹.直接醇类燃料电池的研究与发展前景综述[J].真空VACUUM,2017,54(4):64-68.
[5]卢娜丽,李尧,张磊.纳米多孔Pt-Si合金对乙醇的电催化氧化研究[N].常熟理工学院学报,2018,32(5):19-24.
[6]Lin S C,Chen J Y,et al.A facile route to prepare PdPt alloys for ethanol electro-oxidation in alkaline electrolyte[J].Materials Letters,2011,65(2):215-218.
[7]Xing X L,Serhiy C,Chung C H.Porous Pd films as effective ethanol oxidation electro-catalysts in alkaline medium[J].Materials Chemistry and Physics,2011,126(1-2):36-40.
[8]Elise E S,Tim S O,Abhaya K D,et al.Templated Pt-Sn electro-catalysts for ethanol,methanol and CO oxidation in alkaline media[J].Electrochimica Acta,2009,54(3):989-995.
[9]Gao H L,Liao S J,Liang Z X,et al.Anodic oxidation of ethanol on core-shell structured Ru@PtPd/C catalyst in alkaline media[J].Journal of Power Sources,2011(15):6138-6 143.
[10]王旭红,马冠云,阮世栋.直接乙醇燃料电池阳极催化剂载体的研究进展[J].化工新型材料,2015,43(1):21-23.
[11]蔡志泉,张敏,孟煜阳,等.Pt纳米粒子/Pd纳米线复合材料对乙醇的电催化氧化研究[J].化学研究与应用,2014,26(4):572-576.
[12]朱昱,周燕琴,魏金栋,等.直接乙醇燃料电池电催化研究进展[J].现代化工,2016,36(4):18-24.
[13]赵新生,孙公权,姜鲁华.碳纳米管担载PtSn阳极催化剂对乙醇的电催化氧化性能研究[N].高等学校化学学报,2005(07).