Solute-saturated supercritical CO2 loading of 2-phenylethyl alcohol in silica and activated carbon: Measurement and mechanism

被引：1

作者：

Song, Lei ^{[1
]}

Chen, Yifan ^{[1
]}

Chen, Kainan ^{[1
]}

Hu, Xiaohui ^{[2
]}

Hong, Yanzhen ^{[1
]}

Wang, Hongtao ^{[1
]}

Li, Jun ^{[1
]}

机构：

[1] Xiamen Univ, Natl Engn Lab Green Chem Prod Alcohols Ethers & E, Coll Chem & Chem Engn, Dept Chem & Biochem Engn, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Coll Energy & Sch Energy Res, Xiamen 361005, Peoples R China

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2017年 / 128卷

基金：

中国国家自然科学基金;

关键词：

Supercritical loading; Adsorption; Activated carbon; Silica; 2-phenylethyl alcohol; Mechanism; ADSORPTION-ISOTHERMS; DIOXIDE; FLUIDS;

D O I：

10.1016/j.supflu.2017.06.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A solute-saturated supercritical fluid loading (SSFL) process was proposed to load 2-phenylethyl alcohol (PEA) in silica and activated carbon (AC). The adsorption and loading amounts of PEA in carries were investigated at different temperatures (50.0-60.0 degrees C) and pressures (8.0-14.0 MPa) by a column sampling method. By using a high-pressure quartz spring method, the adsorption amounts of the binary PEA and CO2 in silica were determined. The retention of PEA in the SSFL powder flavors was evaluated by a nitrogen-purging method. Results revealed that, compared with AC, silica had high loading of PEA (maximum 0.484 g/g) and showed better results in PEA preservation from loss at room temperature and control release at higher temperature; PEA suppressed the adsorption of CO2 at relatively high pressure. Discussion indicated that precipitation and adsorption contributed to the high loading of PEA in silica, while adsorption mainly contributed to that in AC.

引用

页码：378 / 385

页数：8

共 12 条

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