Preparation and characterization of nano-porous silica-zirconia aerogels

He Xin Zhang; Xiao Dong He; Yao Li; Chang Qing Hong; Guo Hui Cao; Dong Ming Xu

Preparation and characterization of nano-porous silica-zirconia aerogels

He Xin Zhang^*
, Xiao Dong He
, Yao Li
, Chang Qing Hong
, Guo Hui Cao
, Dong Ming Xu

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology
Harbin Engineering University

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

Abstract

A series of highly Nano-porous SiO₂-ZrO₂ aerogels were manufactured with tetraethylorthosilicate (TEOS) and zirconyl nitrate dihydrate (ZrO(NO₃)₂·2H₂O) by the sol-gel method followed by supercritical drying technique. The prepared aerogels are performed by SEM, FT-IR and BET to characterize and analyze the morphology and pores structure of SiO₂-ZrO₂ aerogels. The results showed that: The areogels are the typical of nano pores in the interval between 1<D_p<30 nm; the specific surface areas varied from 300 to 620 m²/g with (S_BET)_MAX = 615.5 m²/g with 35 wt% Zirconia and the surface areas decreased with the increase of zirconia; The thermal conductivity attains 0.015 W/(m·k); a mass of Si-O-Zr bands existed in the aerogels indicating a homogeneous distribution of the components on the nano scale.

Original language	English
Pages (from-to)	45-48
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

Nano-porous
SiO-ZrO aerogels
Sol-gel
Supercritical drying

Cite this

@article{ff332cd25e5e4e0393b4822f859cf73c,

title = "Preparation and characterization of nano-porous silica-zirconia aerogels",

abstract = "A series of highly Nano-porous SiO2-ZrO2 aerogels were manufactured with tetraethylorthosilicate (TEOS) and zirconyl nitrate dihydrate (ZrO(NO3)2·2H2O) by the sol-gel method followed by supercritical drying technique. The prepared aerogels are performed by SEM, FT-IR and BET to characterize and analyze the morphology and pores structure of SiO2-ZrO2 aerogels. The results showed that: The areogels are the typical of nano pores in the interval between 1p<30 nm; the specific surface areas varied from 300 to 620 m2/g with (SBET)MAX = 615.5 m2/g with 35 wt\% Zirconia and the surface areas decreased with the increase of zirconia; The thermal conductivity attains 0.015 W/(m·k); a mass of Si-O-Zr bands existed in the aerogels indicating a homogeneous distribution of the components on the nano scale.",

keywords = "Nano-porous, SiO-ZrO aerogels, Sol-gel, Supercritical drying",

author = "Zhang, \{He Xin\} and He, \{Xiao Dong\} and Yao Li and Hong, \{Chang Qing\} and Cao, \{Guo Hui\} and Xu, \{Dong Ming\}",

year = "2005",

month = may,

language = "英语",

volume = "37",

pages = "45--48",

journal = "Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology",

issn = "0367-6234",

publisher = "Harbin Institute of Technology",

number = "SUPPL. 1",

}

TY - JOUR

T1 - Preparation and characterization of nano-porous silica-zirconia aerogels

AU - Zhang, He Xin

AU - He, Xiao Dong

AU - Li, Yao

AU - Hong, Chang Qing

AU - Cao, Guo Hui

AU - Xu, Dong Ming

PY - 2005/5

Y1 - 2005/5

N2 - A series of highly Nano-porous SiO2-ZrO2 aerogels were manufactured with tetraethylorthosilicate (TEOS) and zirconyl nitrate dihydrate (ZrO(NO3)2·2H2O) by the sol-gel method followed by supercritical drying technique. The prepared aerogels are performed by SEM, FT-IR and BET to characterize and analyze the morphology and pores structure of SiO2-ZrO2 aerogels. The results showed that: The areogels are the typical of nano pores in the interval between 1p<30 nm; the specific surface areas varied from 300 to 620 m2/g with (SBET)MAX = 615.5 m2/g with 35 wt% Zirconia and the surface areas decreased with the increase of zirconia; The thermal conductivity attains 0.015 W/(m·k); a mass of Si-O-Zr bands existed in the aerogels indicating a homogeneous distribution of the components on the nano scale.

AB - A series of highly Nano-porous SiO2-ZrO2 aerogels were manufactured with tetraethylorthosilicate (TEOS) and zirconyl nitrate dihydrate (ZrO(NO3)2·2H2O) by the sol-gel method followed by supercritical drying technique. The prepared aerogels are performed by SEM, FT-IR and BET to characterize and analyze the morphology and pores structure of SiO2-ZrO2 aerogels. The results showed that: The areogels are the typical of nano pores in the interval between 1p<30 nm; the specific surface areas varied from 300 to 620 m2/g with (SBET)MAX = 615.5 m2/g with 35 wt% Zirconia and the surface areas decreased with the increase of zirconia; The thermal conductivity attains 0.015 W/(m·k); a mass of Si-O-Zr bands existed in the aerogels indicating a homogeneous distribution of the components on the nano scale.

KW - Nano-porous

KW - SiO-ZrO aerogels

KW - Sol-gel

KW - Supercritical drying

UR - https://www.scopus.com/pages/publications/26644434418

M3 - 文章

AN - SCOPUS:26644434418

SN - 0367-6234

VL - 37

SP - 45

EP - 48

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 characterization of nano-porous silica-zirconia aerogels

Abstract

Keywords

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