Mesoporous silica powders and films - Pore size characterization by krypton adsorption

被引：20
作者：
Chiu, CY
Chiang, AST
Chao, KJ [1 ]
机构：
[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu 300, Taiwan
[2] Natl Cent Univ, Dept Chem & Mat Engn, Chungli 32054, Taiwan
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2006年 / 91卷 / 1-3期
关键词：
Kr adsorption; mesoporous silica; thin film;
D O I：
10.1016/j.micromeso.2005.12.003
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
An experimental correlation was established between pore size derived from N-2 adsorption, D-N2, and capillary condensation/evaporation pressure, (P/P-0)(t,Kr), obtained from Kr adsorption/desorption isotherms on powdery siliceous MCM-41, MCM-48 and SBA-15 samples, and was analyzed by the DBdB theory. The correlation was then used to estimate the pore size distribution from the Kr adsorption isotherm of mesoporous silica layers on Si(100) wafer prepared using P123 and Brij (R) 56 surfactants. It was found by TEM analysis that the pore shape in the thin films was distorted from circular to ellipsoidal, leading to different pore sizes estimated from the adsorption and desorption branches of the Kr isotherm. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码：244 / 253
页数：10
相关论文
共 43 条
[1]   THE DETERMINATION OF PORE VOLUME AND AREA DISTRIBUTIONS IN POROUS SUBSTANCES .1. COMPUTATIONS FROM NITROGEN ISOTHERMS [J].
BARRETT, EP ;
JOYNER, LG ;
HALENDA, PP .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (01) :373-380
[2]   THE DETERMINATION OF SMALL SURFACE AREAS BY KRYPTON ADSORPTION AT LOW TEMPERATURES [J].
BEEBE, RA ;
BECKWITH, JB ;
HONIG, JM .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1945, 67 (09) :1554-1558
[3]   STUDIES ON PORE SYSTEMS IN CATALYSTS .12. PORE DISTRIBUTIONS FROM DESORPTION BRANCH OF A NITROGEN SORPTION ISOTHERM IN CASE OF CYLINDRICAL PORES .A. AN ANALYSIS OF CAPILLARY EVAPORATION PROCESS [J].
BROEKHOFF, JC ;
DEBOER, JH .
JOURNAL OF CATALYSIS, 1968, 10 (04) :368-+
[4]   STUDIES ON PORE SYSTEMS IN CATALYSTS .9. CALCULATION OF PORE DISTRIBUTIONS FROM ADSORPTION BRANCH OF NITROGEN SORPTION ISOTHERMS IN CASE OF OPEN CYLINDRICAL PORES .A. FUNDAMENTAL EQUATIONS [J].
BROEKHOFF, JC ;
DEBOER, JH .
JOURNAL OF CATALYSIS, 1967, 9 (01) :8-+
[5]   The preparation of highly ordered MCM-41 with extremely low surfactant concentration [J].
Cai, Q ;
Lin, WY ;
Xiao, FS ;
Pang, WQ ;
Chen, XH ;
Zou, BS .
MICROPOROUS AND MESOPOROUS MATERIALS, 1999, 32 (1-2) :1-15
[6]  
CHAO KJ, 2004, P 14 INT ZEOL C, P1363
[7]  
CHIANG AST, UNPUB PORE ADSORPTIO
[8]  
CHIU CY, 2004, THESIS NATL TSINGHUA
[9]   Grand canonical Monte Carlo simulation of argon adsorption at the surface of silica nanopores: Effect of pore size, pore morphology, and surface roughness [J].
Coasne, B ;
Pellenq, RJM .
JOURNAL OF CHEMICAL PHYSICS, 2004, 120 (06) :2913-2922
[10]   Sorption hysteresis and the vapor pressure of concave surfaces [J].
Cohan, LH .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :433-435
12345