Preparation and characterizations of Al2O3 xerogels by non-supercritical drying

Chuan Xin Zhang; Xiao Dong He; Yao Li; Fei He

Preparation and characterizations of Al₂O₃ xerogels by non-supercritical drying

Chuan Xin Zhang^*
, Xiao Dong He
, Yao Li
, Fei He

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

Alumina xerogels of integrated structure were prepared through polymerization of molecular units (PMU) and non-supercritical drying of alkogels formed from aluminum iso-propylate (AIP) by hydrolytic condensation. The performances of heat treatment alumina xerogels were investigated by means of SEM, IR, XRD and BET. Alumina xerogels consisted of an amorphous networks with nano-particles and boehmite crystallites which changed to α-Al₂O₃ heating at 1250°C. The BET results showed that the samples had concentrative porous distribution, the average pore size was 5.02 nm and the specific surface area was 780.57 m²/g.

Original language	English
Pages (from-to)	13-16
Number of pages	4
Journal	Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology
Volume	37
Issue number	SUPPL. 1
State	Published - May 2005

Keywords

Alumina xerogels
Boehmite crystallites
Nanopore

Cite this

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title = "Preparation and characterizations of Al2O3 xerogels by non-supercritical drying",

abstract = "Alumina xerogels of integrated structure were prepared through polymerization of molecular units (PMU) and non-supercritical drying of alkogels formed from aluminum iso-propylate (AIP) by hydrolytic condensation. The performances of heat treatment alumina xerogels were investigated by means of SEM, IR, XRD and BET. Alumina xerogels consisted of an amorphous networks with nano-particles and boehmite crystallites which changed to α-Al2O3 heating at 1250°C. The BET results showed that the samples had concentrative porous distribution, the average pore size was 5.02 nm and the specific surface area was 780.57 m2/g.",

keywords = "Alumina xerogels, Boehmite crystallites, Nanopore",

author = "Zhang, \{Chuan Xin\} and He, \{Xiao Dong\} and Yao Li and Fei He",

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TY - JOUR

T1 - Preparation and characterizations of Al2O3 xerogels by non-supercritical drying

AU - Zhang, Chuan Xin

AU - He, Xiao Dong

AU - Li, Yao

AU - He, Fei

PY - 2005/5

Y1 - 2005/5

N2 - Alumina xerogels of integrated structure were prepared through polymerization of molecular units (PMU) and non-supercritical drying of alkogels formed from aluminum iso-propylate (AIP) by hydrolytic condensation. The performances of heat treatment alumina xerogels were investigated by means of SEM, IR, XRD and BET. Alumina xerogels consisted of an amorphous networks with nano-particles and boehmite crystallites which changed to α-Al2O3 heating at 1250°C. The BET results showed that the samples had concentrative porous distribution, the average pore size was 5.02 nm and the specific surface area was 780.57 m2/g.

AB - Alumina xerogels of integrated structure were prepared through polymerization of molecular units (PMU) and non-supercritical drying of alkogels formed from aluminum iso-propylate (AIP) by hydrolytic condensation. The performances of heat treatment alumina xerogels were investigated by means of SEM, IR, XRD and BET. Alumina xerogels consisted of an amorphous networks with nano-particles and boehmite crystallites which changed to α-Al2O3 heating at 1250°C. The BET results showed that the samples had concentrative porous distribution, the average pore size was 5.02 nm and the specific surface area was 780.57 m2/g.

KW - Alumina xerogels

KW - Boehmite crystallites

KW - Nanopore

UR - https://www.scopus.com/pages/publications/26644467507

M3 - 文章

AN - SCOPUS:26644467507

SN - 0367-6234

VL - 37

SP - 13

EP - 16

JO - Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology

JF - Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology

IS - SUPPL. 1

ER -

Preparation and characterizations of Al₂O₃ xerogels by non-supercritical drying

Abstract

Keywords

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