整体式担载型Pt基催化剂上航空煤油的裂解:助剂SrO和BaO的影响

doi:10.1016/S1872-2067(12)60541-5

催化学报 ›› 2013, Vol. 34 ›› Issue (6): 1139-1147.DOI: 10.1016/S1872-2067(12)60541-5

整体式担载型Pt基催化剂上航空煤油的裂解:助剂SrO和BaO的影响

焦毅^a, 王佳^b, 秦莉晓^b, 王健礼^a, 朱权^b, 李象远^b, 龚茂初^a, 陈耀强^a

a 四川大学化学学院, 绿色化学与技术教育部重点实验室, 四川成都610064;
b 四川大学化工学院, 四川成都610064

收稿日期:2012-11-30 修回日期:2012-12-31 出版日期:2013-06-07 发布日期:2013-06-09
通讯作者: 王健礼
基金资助:
国家自然科学基金(91016002);国家高技术研究发展计划(863计划, 2006AA01A119);高超声速冲压发动机技术重点实验室开放基金(20120103013).

Kerosene cracking over supported monolithic Pt catalysts: Effects of SrO and BaO promoters

JIAO Yi^a, WANG Jia^b, QIN Lixiao^b, WANG Jianli^a, ZHU Quan^b, LI Xiangyuan^b, GONG Maochu^a, CHEN Yaoqiang^a

a Key Laboratory of Green Chemistry and Technology of the Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China;
b College of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China

Received:2012-11-30 Revised:2012-12-31 Online:2013-06-07 Published:2013-06-09
Supported by:
This work was supported by the National Natural Science Foundation of China (91016002), the National High Technology Research and Development Program of China (863 Program, 2006AA01A119), and the Open Foundation of Key laboratory on hypersonic scramjet Technology (20120103013).

摘要/Abstract

摘要：

考察了整体式担载型Pt基催化剂上国产3号航空煤油(RP-3)的常压裂解反应,着重探讨了添加BaO和SrO助剂对裂解效果的影响,以及裂解时间对积炭量的影响.采用全自动吸附仪、程序升温还原、X射线光电子能谱以及X射线衍射和扫描电镜等方法对催化剂进行了表征.结果表明,在整体式担载型Pt基催化剂上RP-3裂解的总产气量比热裂解提高了39.7%;BaO或SrO助剂的添加又使其总产气量又分别提高了25.6%和37.0%;同时添加BaO和SrO的催化剂,其催化裂解总产气量则提高了96.5%.BaO和SrO助剂均可有效地抑制积炭的生成,而两者间的协同作用,进一步抑制了RP-3催化裂解过程中积炭的生成.

关键词: 催化裂解, 积炭, 碱土金属氧化物, 吸热燃料, 整体式催化剂

Abstract:

The cracking of RP-3 fuel over supported monolithic Pt catalysts was studied at atmospheric pressure. The influence of BaO and SrO additives on the cracking reaction was examined. The effect of reaction time on the amount of carbon deposited during cracking was investigated. The catalysts were characterized using an automatic adsorption instrument (for Brunauer-Emmett-Teller analysis), temperature-programmed reduction, X-ray photoelectron spectroscopy, X-ray diffraction, and scanning electron microscopy. The results show that the total amount of gaseous products produced in catalytic cracking over a monolithic Pt/CA(CeO₂-Al₂O₃)-La-Al₂O₃ (CA is a support) catalyst increased by 39.7% compared with that produced by thermal cracking. The addition of BaO or SrO improved the total amount of gaseous products by 25.6% and 37%, respectively. If BaO and SrO were simultaneously added to the monolithic Pt/CA-La-Al₂O₃ catalyst, the catalytic effect improved significantly, and the total amount of gaseous products increased by 96.5%. The addition of BaO or SrO effectively inhibits carbon deposition, and the synergistic effect of BaO and SrO additives improves the cracking reaction.

Key words: Catalytic cracking, Carbon deposition, Alkaline-earth metal oxide, Endothermic fuel, Monolithic catalyst

焦毅, 王佳, 秦莉晓, 王健礼, 朱权, 李象远, 龚茂初, 陈耀强. 整体式担载型Pt基催化剂上航空煤油的裂解:助剂SrO和BaO的影响[J]. 催化学报, 2013, 34(6): 1139-1147.

JIAO Yi, WANG Jia, QIN Lixiao, WANG Jianli, ZHU Quan, LI Xiangyuan, GONG Maochu, CHEN Yaoqiang. Kerosene cracking over supported monolithic Pt catalysts: Effects of SrO and BaO promoters[J]. Chinese Journal of Catalysis, 2013, 34(6): 1139-1147.

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整体式担载型Pt基催化剂上航空煤油的裂解:助剂SrO和BaO的影响

Kerosene cracking over supported monolithic Pt catalysts: Effects of SrO and BaO promoters

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