山东化工
山東化工
산동화공
SHANDONG CHEMICAL INDUSTRY
2015年
1期
1-4,8
,共5页
介孔硅胶%混合胺%cO2 吸附%循环稳定性
介孔硅膠%混閤胺%cO2 吸附%循環穩定性
개공규효%혼합알%cO2 흡부%순배은정성
mesoporous silica gel%mixed - amine%cO2 adsorption%cycle stability
以介孔硅胶为载体，采用“嫁接+浸渍”两步法制备了混合胺（APTS + TEPA）修饰的介孔硅胶吸附剂。在固定床中考察了3-氨丙基三乙氧基硅烷（APTS）和四乙烯五胺（TEPA）负载量、吸附温度、进气流量对 cO2吸附性能的影响，并研究了吸附剂的循环稳定性。结果表明，当 APTS 负载量30%，TEPA 负载量30%（TEPA30- APTS30- MSG），吸附温度为70℃，进气流量为30 mL/min 时，该吸附剂表现出最好的吸附性能，饱和吸附量高达3.04 mmol/ g，较纯 TEPA 浸渍提高了37.6%。该吸附剂经10次吸脱附循环后，饱和吸附量仅下降2.96%，具有较好的循环稳定性。
以介孔硅膠為載體，採用“嫁接+浸漬”兩步法製備瞭混閤胺（APTS + TEPA）脩飾的介孔硅膠吸附劑。在固定床中攷察瞭3-氨丙基三乙氧基硅烷（APTS）和四乙烯五胺（TEPA）負載量、吸附溫度、進氣流量對 cO2吸附性能的影響，併研究瞭吸附劑的循環穩定性。結果錶明，噹 APTS 負載量30%，TEPA 負載量30%（TEPA30- APTS30- MSG），吸附溫度為70℃，進氣流量為30 mL/min 時，該吸附劑錶現齣最好的吸附性能，飽和吸附量高達3.04 mmol/ g，較純 TEPA 浸漬提高瞭37.6%。該吸附劑經10次吸脫附循環後，飽和吸附量僅下降2.96%，具有較好的循環穩定性。
이개공규효위재체，채용“가접+침지”량보법제비료혼합알（APTS + TEPA）수식적개공규효흡부제。재고정상중고찰료3-안병기삼을양기규완（APTS）화사을희오알（TEPA）부재량、흡부온도、진기류량대 cO2흡부성능적영향，병연구료흡부제적순배은정성。결과표명，당 APTS 부재량30%，TEPA 부재량30%（TEPA30- APTS30- MSG），흡부온도위70℃，진기류량위30 mL/min 시，해흡부제표현출최호적흡부성능，포화흡부량고체3.04 mmol/ g，교순 TEPA 침지제고료37.6%。해흡부제경10차흡탈부순배후，포화흡부량부하강2.96%，구유교호적순배은정성。
A novel hybrid 3 - aminopropyltrimethoxysilane( APTS) and tetraethylenepentamine ( TEPA ) modified mesoporous silica gel sorbent was synthesized by a two - step method,which combined grafting and impregnation methods. The effects of APTS and TEPA loadings,adsorption temperature and influent velocities on cO2 adsorption capacity were investigated in a self - assembled fixed bed reactor. It was found that the mesoporous silica gel modified with 30% APTS and 30% TEPA(TEPA30 - APTS30 - MSG)showed a maximum adsorption capacity of 3. 04 mmol - cO2 / g - sorbent at a optimal temperature of 70 ℃ and influent velocities of 30 mL/ min. The adsorption capacity is maintained after 10 cycles of adsorption - desorption process,indicating that the mixed - amine functionalized mesoporous silica gel exhibited an excellent stability in a prolonged cyclic operation.
