介孔材料MCM-41上汽油吸附深度脱硫(英文)  

Deep Desulfurization of Gasoline by Adsorption on Mesoporous MCM-41

作　　者：田福平[1] 蒋宗轩[2] 梁长海[2] 李瑛[2] 蔡天锡[1] 李灿[2] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116012 [2]中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

出　　处：《催化学报》2005年第8期628-630,共3页

摘　　要：研究了不同硅铝比的MCM-41介孔材料作为吸附剂对模型汽油以及真实FCC汽油的脱硫性能.结果表明,在室温和常压下,MCM-41介孔材料对模型溶液中噻吩的吸附随着吸附剂中铝含量的增加而显著提高.吡啶吸附的红外光谱显示,噻吩吸附容量的提高与吸附材料酸性的明显增大有直接关系.但在对FCC汽油的吸附脱硫实验中,随着MCM-41中铝含量的提高,脱硫率并未增大.这主要是由于在FCC汽油中存在大量性质与噻吩类含硫化合物十分相近的芳烃和烯烃,竞争吸附导致MCM-41对有机硫化物的吸附能力显著降低.Deep desulfurization of fuel oils has attracted increasing attention in recent years due to more stringent regulations and potential applications in fuel cells. Conventional hydrodesulfurization （HDS） processes can remove the majority of the sulfur-containing compounds present in fuels. However, HDS cannot be used to produce ultra low-sulfur gasoline because of the octane number loss caused by the saturation of the olefins. Therefore, it is necessary to develop other non-HDS methods for producing cleaner gasoline. Deep desulfurization by adsorption is one of the more promising deep desulfurization methods. Several adsorbents have been studied, including metal cation-exchanged microporous zeolites, modified complex oxides and activated carbon, but there has been only one paper on adsorption desulfurization on mesoporous materials. At present, the main obstacle to the industrial application is the low adsorption capacity of the adsorbents. Here we report on the sulfur removal from model gasoline and FCC gasoline by mesoporous MCM-41 with different Al contents

关 键 词：介孔材料 MCM-41 吸附 噻吩 汽油 深度脱硫 

分 类 号：TE624.55[石油与天然气工程—油气加工工程]