A Comparison Study of Carbon Dioxide Adsorption on Polydimethylsiloxane, Silica Gel, and Illinois No. 6 Coal Using in Situ Infrared Spectroscopy

被引：33

作者：

Goodman, A. L. ^{[1
]}

机构：

[1] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA

来源：

ENERGY & FUELS | 2009年 / 23卷 / 1-2期

关键词：

ARGONNE PREMIUM COALS; CO2; SORPTION; IR; ISOTHERMS; SURFACE; DIFFUSION; PRESSURE; CAPACITY; VAPORS;

D O I：

10.1021/ef8008025

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Adsorption of supercritical carbon dioxide (CO2) on polydimethylsiloxane (PDMS), silica gel (SiO2), and Illinois No. 6 coal was compared using in situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy at pressures up to 14 MPa and temperatures at 40 degrees C and 50 degrees C. Only physical adsorption of CO2 was recorded for PDMS, SiO2, and Illinois No. 6. There was no evidence of the formation of carbonic acid, bicarbonates, carbonates, or any other reaction product between CO2 and PDMS, SiO2, and Illinois No. 6 coal. Carbon dioxide adsorption on PDMS and SiO2 produced a linear isotherm while a typical Langmuir-like isotherm was observed for Illinois No. 6 coal. Attempts to measure CO2 induced swelling of the three materials was unsuccessful due to the design of the ATR-FTIR cell.

引用

页码：1101 / 1106

页数：6

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