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Ultra-stable metal nano-catalyst synthesis strategy:a perspectiveXiao-Qing Cao,Jun Zhou,Song Li,Gao-Wu QinKey Laboratory for Anisotropy and Texture of Materials,School of Materials Science and Engineering,Northeastern University摘 要:Supported metal nanoparticles(NPs) as an important heterogeneous catalyst have been widely applied in various industrial......
金在低温燃料电池技术中的应用前景 唐春1,杨喜昆2,董颖男1 (1.昆明贵金属研究所,云南,昆明,650106;2.昆明理工大学,分析测试研究中心,云南,昆明,650091) 摘要:金因其良好的物理化学性质和催化活性在低温燃料电池技术中具有很好的应用前景.本文就金在此方向的研究进展进行综述,包括:金催化剂选择氧化燃料电池氢燃料中的CO以及Pt-Au系电催化剂,Pd-Au系电催化剂,以金为主体的电催化剂的研究状况.同时简要介绍了低温燃料电池电催化剂的发展现状和金应用于电催化剂的基础. 关键词:物理化学; 金; 低温燃料电池; 选择性氧化; CO; 电催化剂; [全文内容正在添加中] ......
芦丁在钯-金复合纳米粒子修饰电极上的电化学行为张敏1,孟煜阳1,陈妹琼2,蔡志泉2,张燕2,程发良11. 东莞理工学院生物传感器研究中心2. 东莞理工学院城市学院摘 要:制备了Pd-Au复合纳米粒子修饰玻碳电极(Pd-Au/GCE),研究了芦丁在Pd-Au/GCE修饰电极上的电化学行为,该修饰电极对芦丁的电化学氧化有明显的催化作用.用循环伏安法(CV)对芦丁进行了测定,其氧化峰电流与芦丁的浓度在2.5×10-67.5×10-5mol/L范围内呈良好的线性关系,线性相关系数为0.9971,检出限(S/N=3)为1.0×10-7.方法可用于市售芦丁片中芦丁含量的测定,标准加入法的回收率在87.7%103.1%之间.关键词:钯-金复合纳米粒子;芦丁;修饰电极;电化学行为;......
关注.氢能在能源,交通,工业等领域具有广阔的应用前景,尤其以燃料电池车为代表的交通领域是氢能初期应用的突破口与主要市场.而氢燃料电池对氢气浓度要求较高,氢气中即使微量的H2S和CO杂质也会严重降低电池性能.因此,需要对氢气进行分离纯化去除杂质气体.钯及钯合金膜由于对氢气具有极高的选择渗透性而应用于氢气的分离提纯,然而钯及钯合金膜的化学稳定性问题一直制约其广泛应用.本文介绍了纯Pd膜,Pd-Ag,Pd-Y,Pd-Pt,Pd-Cu和Pd-Au二元合金膜以及Pd-Ag-M,Pd-Cu-M三元合金膜氢渗透与抗杂质气体毒化方面的研究进展及存在问题.纯钯膜在低温下存在氢脆现象且易被杂质气体毒化;与纯钯膜相比,钯基二元合金膜成本较低,Pd-Ag,Pd-Y合金膜透氢性能较好而抗杂质气体毒化性能较差,Pd-Pt,Pd-Cu和Pd-Au合金膜则具有相反的特性;钯基三元合金膜在一定程度上提高了二元合金膜的透氢性......
Research Institute of Petrochemical Technology摘 要:Fabrication of novel nano-catalyst with improved activity and stability has been a hot topic in heterogeneous catalysis. Herein a novel approach was designed to synthesize Pd-CeO2 colloidal assembled spheres(CASs) in one-pot fashion. The Pd clusters were encompassed by the CeO2 nanocrystals with a high......
Research Institute of Petrochemical Technology摘 要:Fabrication of novel nano-catalyst with improved activity and stability has been a hot topic in heterogeneous catalysis. Herein a novel approach was designed to synthesize Pd-CeO2 colloidal assembled spheres(CASs) in one-pot fashion. The Pd clusters were encompassed by the CeO2 nanocrystals with a high......
and methanol and the time requires for reaching equilibrium. The structure of nano KF/γ-Al2O3 surface does not change, but the specific surface area of the nano-catalyst greatly reduces from 60.34 m2/g... K2CO3/γ-Al2O3催化剂的制备及其用于菜籽油制备生物柴油的研究[J]. 生物质化学工程, 2008, 42(1): 6-10.HU Sheng-yang, WANG Yun, HAN He-you, et al. Preparation of nano K2CO3/γ-Al2O3 catalyst and its application for synthesis of biodiesel from......
of CeO2-500 nano-catalyst can be ascribed to O2-, ’OH and R’+ as the primary oxidative species involved in the degradation of RC under UVA-light irradiation.关键词:......
of CeO2-500 nano-catalyst can be ascribed to O2-, ’OH and R’+ as the primary oxidative species involved in the degradation of RC under UVA-light irradiation.关键词:......
acid on functional MWCNTs supported nanostructured Pd-Au catalyst[J]. Eletrochemi Commun, 2009, 11: 2249-2252. [11] YI Q F, YU W Q, NIU F J. Novel nanoporous binary Au-Ru electrocatalysts for glucose...文章编号:1004-0609(2011)08-1974-06 金修饰纳米多孔Pd催化剂对甲酸氧化的电催化活性 牛凤娟1,易清风1,刘云清2 (1. 湖南科技大学 化学化工学院,湘潭 411201； 2. 中南大学 化学化工学院,长沙 410083) 摘 要:以水热法制备出纳米多孔网状钯催化剂(nanoPd),采用电位扫描在其上沉积金,制成金修饰纳米钯电极(Au/nanoPd......
