Structure and Reactivity of Platinum-Copper Alloy Particles Supported on ZSM-5

Efim S. Shpiro; Olga P. Tkachenko; Nils I. Jaeger

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Structure and Reactivity of Platinum-Copper Alloy Particles Supported on ZSM-5

机译：ZSM-5负载铂铜合金颗粒的结构和反应活性

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Electronic and structural properties of highly dispersed Pt-Cu alloys supported on zeolite HZSM-5 with narrow particle size distribution (1-2 nm) were studied by transmission electron microscopy, X↓(-ray) photoelectron spectroscopy, and Fourier transform infrared spectroscopy of chemisorbed carbon monoxide, FTIR of adsorbed CO proved to be the most sensitive tool for the detection of alloy formation. Dilution the platinum surface with copper can be recognized by the absence of dipole-dipole interaction between the chemisorbed CO molecules (geometric effect). A strong red shift of the vibration frequency of linearly bonded CO in conjunction with an increase of the relative intensity of bridge-bonded CO is discussed in t electronic effect. All spectroscopic methods demonstrate the ready reoxidation and redispersion of the copper component of the particles and the reversible formation of the alloy again by repeated reduction.

机译：通过透射电子显微镜，X↓（射线）光电子能谱和傅里叶变换红外光谱研究了HZSM-5分子筛上窄分布（1-2 nm）的高度分散的Pt-Cu合金的电子和结构性能。化学吸附的一氧化碳，吸附的CO的FTIR被证明是检测合金形成的最灵敏工具。化学吸附的CO分子之间不存在偶极-偶极相互作用（几何效应），可以识别出用铜稀释铂表面。在电子效应中讨论了线性键合的CO的振动频率的强烈红移以及桥键合的CO的相对强度的增加。所有的光谱方法证明了颗粒中铜成分的预氧化和再分散以及通过重复还原再次可逆地形成合金。

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《The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical》 |1998年第20期|共8页
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Efim S. Shpiro; Olga P. Tkachenko; Nils I. Jaeger;
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中图分类物理化学（理论化学）、化学物理学;
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1. Structure and Reactivity of Platinum-Copper Alloy Particles Supported on ZSM-5 [J] . Efim S. Shpiro, Olga P. Tkachenko, Nils I. Jaeger The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 1998,第17a20期

机译：ZSM-5负载铂铜合金颗粒的结构和反应活性
2. Controlled fabrication of mesoporous ZSM-5 zeolite-supported PdCu alloy nanoparticles for complete oxidation of toluene [J] . He Jiaqin, Chen Dongyun, Li Najun, Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications . 2020,第期

机译：中孔ZSM-5沸石负载的PDCU合金纳米颗粒的受控制备用于完全氧化甲苯
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4. Local Structures of Ag~+/ZSM-5 Catalysts and Their Photocatalytic Reactivity for the Decomposition of N_2O into N_2 and O_2 [C] . Masaya Matsuoka, Woo-Sung Ju, Masakazu Anpo IZC;International zeolite conference . 2001

机译：Ag〜+ / ZSM-5催化剂的局部结构及其对N_2O分解为N_2和O_2的光催化活性
5. Nature of Catalytic Active Sites in Supported MOx/ZSM-5 Catalysts: Anchoring Sites, Electronic Structures, Molecular Structures and Reactivity. [D] . Tang, Yadan. 2014

机译：负载型MOx / ZSM-5催化剂中催化活性位的性质：固定位，电子结构，分子结构和反应性。
6. Effects of Alloying Elements on the Formation of Core-Shell-Structured Reinforcing Particles during Heating of Al–Ti Powder Compacts [O] . Tijun Chen, Min Gao, Yunqi Tong 2018

机译：Al-Ti粉末成形体加热过程中合金元素对核壳结构增强颗粒形成的影响
7. Size dependent reactivity of metal nanoparticles and alloys supported on HOPG, probed by the H-D exchange and the NH3 decomposition reactions [O] . Fiordaliso Elisabetta Maria, Chorkendorff Ib 2012

机译：通过H-D交换和NH 3分解反应探测金属纳米颗粒和HOpG上负载的合金的尺寸依赖性反应性
8. X-Ray Photoelectron Spectroscopic Binding Energy Shifts Due to Matrix in Alloys and Small Supported Metal Particles. [R] . Kim, K. S., Winograd, N. 1974

机译：由合金和小支撑金属颗粒中的基体引起的X射线光电子能谱结合能量偏移。

Structure and Reactivity of Platinum-Copper Alloy Particles Supported on ZSM-5

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