TEPA在SBA-15(P)上的嫁接形态及其对CO<sub>2</sub>吸附性能的影响

引用本文: 杨永红, 李芬芬, 杨成, 张文郁, 吴晋沪. TEPA在SBA-15(P)上的嫁接形态及其对CO₂吸附性能的影响[J]. 物理化学学报, 2012, 28(01): 195-200. doi: 10.3866/PKU.WHXB201228195 shu

Citation: YANG Yong-Hong, LI Fen-Fen, YANG Cheng, ZHANG Wen-Yu, WU Jin-Hu. Grafting Morphologies of TEPA on SBA-15(P) and Its Effect on CO₂ Adsorption Performance[J]. Acta Physico-Chimica Sinica, 2012, 28(01): 195-200. doi: 10.3866/PKU.WHXB201228195 shu

TEPA在SBA-15(P)上的嫁接形态及其对CO₂吸附性能的影响

基金项目:
山东省自然科学基金(2009ZRB01250) (2009ZRB01250)

青岛市科技发展计划(1263194353127)资助项目 (1263194353127)

摘要: 通过控制浸渍方法和其过程将四乙烯五胺(TEPA)负载到SBA-15原粉上制备氨基功能化的CO₂吸附材料TEPA/SBA-15(P). 利用X射线衍射(XRD)、氮吸附、元素分析和傅里叶变换红外(FTIR)光谱等手段对各种吸附材料进行表征分析, 并对其CO₂吸附能力进行评价. 结果表明: TEPA乙醇溶液的动态浸渍过程可以使有机胺高度均匀地负载到SBA-15(P)的孔道内, 并形成有利于CO₂吸脱附的键合形式. 提出了TEPA在SBA-15(P)上的键合作用机制, 一方面TEPA的端基氨(－NH₂)与载体中的表面羟基(－OH)和醚键(C－O－C)形成氢键,提高了TEPA的分散度; 另一方面, TEPA乙醇溶液的动态浸渍过程有效地避免了TEPA分子间或分子内氢键的形成, 从而使有机胺TEPA氨基官能团具有较高的吸附容量.

关键词:

SBA-15(P)
/ TEPA
/ CO₂
/ 动态浸渍
/ 键合作用
/ 吸附容量

English

Grafting Morphologies of TEPA on SBA-15(P) and Its Effect on CO₂ Adsorption Performance

1.
1. Key Laboratory of Biofuels, Qindao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong Province, P. R. China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China;
3. Shandong Polytechnic University, Jinan 250353, P. R. China
Received Date: 08 August 2011
Available Online: 29 December 2011
Fund Project:
山东省自然科学基金(2009ZRB01250)

青岛市科技发展计划(1263194353127)资助项目

Abstract: Various amine-functionalized CO₂ adsorbents were prepared by incorporating tetraethylenepenthamine (TEPA) onto SBA-15(P) by controlling the impregnation method and its process. The materials were characterized using X-ray diffraction (XRD), N2-adsorption, elemental analysis, and Fourier transform infrared (FTIR) techniques. Their adsorptive capacities were determined by CO₂-temperature programmed desorption (TPD). The results indicate that the dynamic impregnation process using a TEPA ethanol solution was successful in loading TEPA into the channels of SBA-15(P). Moreover, bonding formation between the highly dispersed TEPA and SBA-15(P) was facilitated to CO₂ adsorption/desorption. Therefore, a binding mechanism is proposed. The －NH₂ group of TEPA forms hydrogen bonds with －OH and C－O－C groups on SBA-15(P), which results in the better dispersion of TEPA. However, the dynamic impregnation process for the TEPA ethanol solution can effectively avoid the formation of hydrogen bonds between the intra- and inter-molecules resulting in the high adsorptive capacity of the amino groups in TEPA.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

TEPA在SBA-15(P)上的嫁接形态及其对CO₂吸附性能的影响

English

Grafting Morphologies of TEPA on SBA-15(P) and Its Effect on CO₂ Adsorption Performance

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中国化学会秘书处

TEPA在SBA-15(P)上的嫁接形态及其对CO2吸附性能的影响

English

Grafting Morphologies of TEPA on SBA-15(P) and Its Effect on CO2 Adsorption Performance

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

TEPA在SBA-15(P)上的嫁接形态及其对CO₂吸附性能的影响

Grafting Morphologies of TEPA on SBA-15(P) and Its Effect on CO₂ Adsorption Performance

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs