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

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....

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Bibliographic Details
Published in催化学报 Vol. 34; no. 6; pp. 1139 - 1147
Main Author 焦毅 王佳 秦莉晓 王健礼 朱权 李象远 龚茂初 陈耀强
Format Journal Article
LanguageChinese
Published 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%四川大学化工学院,四川成都,610064 2013
Subjects
催化裂解
吸热燃料
整体式催化剂
碱土金属氧化物
积炭
积炭
Alkaline-earth metal oxide
整体式催化剂
Endothermic fuel
吸热燃料
Monolithic catalyst
碱土金属氧化物
Carbon deposition
催化裂解
Catalytic cracking
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ISSN0253-9837
1872-2067
DOI10.1016/S1872-2067(12)60541-5

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Summary: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.
Bibliography: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
Catalytic cracking Carbon deposition Alkaline‐earth metal oxide Endothermic fuel Monolithic catalyst
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 ca
ISSN:0253-9837
1872-2067
DOI:10.1016/S1872-2067(12)60541-5