Formation of copper nanoparticles in mordenites with variable SiO2/Al2O3 molar ratios under redox treatments

被引：0

作者：

Petranovskii, V. ^{[1
]}

Stoyanov, E. ^{[2
]}

Gurin, V. ^{[3
]}

Katada, N. ^{[4
]}

Hernandez, M. -A. ^{[5
]}

Avalos, M. ^{[1
]}

Pestryakov, A. ^{[6
]}

Chavez Rivas, F. ^{[7
]}

Zamorano Ulloa, R. ^{[7
]}

Portillo, R. ^{[8
]}

机构：

[1] Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22800, Baja California, Mexico

[2] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA

[3] Belarusian State Univ, Phys Chem Problems Res Inst, Minsk 220080, BELARUS

[4] Tottori Univ, Dept Chem & Biotechnol, Tottori 6808552, Japan

[5] Univ Autonoma Puebla, Dept Invest Zeolitas, Puebla 72570, Mexico

[6] Tomsk Polytech Univ, Tomsk 634050, Russia

[7] ESFM IPN, Dept Fis, Mexico City 07738, DF, Mexico

[8] Univ Autonoma Puebla, Fac Ciencias Quim, Puebla 72570, Mexico

来源：

REVISTA MEXICANA DE FISICA | 2013年 / 59卷 / 02期

关键词：

Mordenite; SiO2/Al2O3 molar ratio; Copper; Nanoparticles; Plasmon resonance;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A series of protonated copper-containing mordenites with different SiO2/Al2O3 molar ratios (MR) in the range of 10 <= MR <= 206 was prepared by ion exchange in copper nitrate aqueous solution. The electron paramagnetic resonance of hydrated copper Mordenites series testifies of several Cu2+ ions sites. Hydrogen reduction of copper ions incorporated into the mordenites was shown to lead to different reduced copper species including small metallic particles inter alia. The structural properties and acidity of mordenites were characterized. The optical appearance of the copper particles showed strong but nonmonotonic dependence on the MR value, in line with the variation in acidity of this series of mordenites. Correlations between mordenite properties and the formation of different reduced copper species are discussed.

引用

页码：170 / 185

页数：16