In situ synthesis of Ni-Al-CO3 LDHs on the surface of γ-Al2O3

被引：0

作者：

Mao, SB ^{[1
]}

Li, DQ ^{[1
]}

Zhang, FZ ^{[1
]}

Evans, DG ^{[1
]}

Duan, X ^{[1
]}

机构：

[1] Beijing Inst Chem Technol, Minist Educ, Key Lab Sci & Technol Controllable Chem React, Beijing 100029, Peoples R China

来源：

CHINESE JOURNAL OF INORGANIC CHEMISTRY | 2004年 / 20卷 / 05期

关键词：

LDHs; LDHs containing Ni; in-situ synthesis; pore structure;

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Ni-Al-CO3 LDHs/gamma-Al2O3 have been prepared using an in-situ synthesis technique. (NH3H2O)-H-. was chosen as activation agent of Al on the gamma-Al2O3 surface as well as precipitant. Ni-Al-CO3 LDHs/gamma-Al2O3 was synthesized by controlling the reaction conditions such as temperature, concentration of Ni2+ and initial pH. The crystalline structure, chemical composition and porous structure were characterized by means of XRD, Fr-IR, TG-DTA, Al-27 MAS-NMR and N-2 adsorption-desorption. The resulting sample of Ni-Al-CO3 LDHs/gamma-Al2O3 possesses higher specific area and narrower pore distribution, in which Ni-Al-CO3, LDHs are located on the surface of gamma-Al2O3 and share the same Al-O bonds with the gamma-Al2O3 lattice. Finally a possible structural model was proposed to account for the porous characters of NI-AI-CO3 LDHs/gamma-Al2O3.

引用

页码：596 / 602

页数：7

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