Pub Date : 1995-12-31DOI: 10.1021/bk-1996-0634.ch013
T. Christensen, J. Rostrup-Nielsen
Adiabatic prereforming is a low-temperature steam reforming process used in modern syngas production. Catalyst deactivation plays an important role in design of adiabatic prereforming and the low-temperature operation requires a high-activity catalyst with resistance to poisoning. This paper presents a model for the complex interaction of chemical reactions, poisoning mechanisms and pore diffusion that results in deactivation of prereforming catalyst
{"title":"Catalyst deactivation in adiabatic prereforming: Experimental methods and models for prediction of performance","authors":"T. Christensen, J. Rostrup-Nielsen","doi":"10.1021/bk-1996-0634.ch013","DOIUrl":"https://doi.org/10.1021/bk-1996-0634.ch013","url":null,"abstract":"Adiabatic prereforming is a low-temperature steam reforming process used in modern syngas production. Catalyst deactivation plays an important role in design of adiabatic prereforming and the low-temperature operation requires a high-activity catalyst with resistance to poisoning. This paper presents a model for the complex interaction of chemical reactions, poisoning mechanisms and pore diffusion that results in deactivation of prereforming catalyst","PeriodicalId":20402,"journal":{"name":"Preprints-American Chemical Society Division of Petroleum Chemistry","volume":"C-24 1","pages":"433-436"},"PeriodicalIF":0.0,"publicationDate":"1995-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84424056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Liu, J. Kelly, M. Ikura, R. J. Torres-Ordonez, U. Lenz
CANMET coprocessing is a single-stage, once through high conversion primary upgrading process. It utilizes a slurry phase feed containing an iron-based disposable additive. This paper reports eight runs done using slurry feed containing 30% Rheinish brown coal and the vacuum towers bottoms. These runs were designed to examine the effects of slurry space velocity, reactor temperatures and recycle gas rate. The results and the application of statistical methods to analyze the experimental results are presented
{"title":"Optimal conditions for CANMET coprocessing of Rheinish coal and refinery VTB","authors":"D. Liu, J. Kelly, M. Ikura, R. J. Torres-Ordonez, U. Lenz","doi":"10.4095/304623","DOIUrl":"https://doi.org/10.4095/304623","url":null,"abstract":"CANMET coprocessing is a single-stage, once through high conversion primary upgrading process. It utilizes a slurry phase feed containing an iron-based disposable additive. This paper reports eight runs done using slurry feed containing 30% Rheinish brown coal and the vacuum towers bottoms. These runs were designed to examine the effects of slurry space velocity, reactor temperatures and recycle gas rate. The results and the application of statistical methods to analyze the experimental results are presented","PeriodicalId":20402,"journal":{"name":"Preprints-American Chemical Society Division of Petroleum Chemistry","volume":"2 1","pages":"756-761"},"PeriodicalIF":0.0,"publicationDate":"1995-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74076504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-12-31DOI: 10.1021/bk-1996-0634.ch005
M. Guisnet, P. Magnoux, K. Moljord
The aim of this paper is to describe coking and deactivation of zeolite catalysts. This description is based on the results obtained during n-heptane cracking and propene transformation at 723 °K on protonic zeolites
{"title":"Modes of coking and deactivation of acid zeolite catalysts","authors":"M. Guisnet, P. Magnoux, K. Moljord","doi":"10.1021/bk-1996-0634.ch005","DOIUrl":"https://doi.org/10.1021/bk-1996-0634.ch005","url":null,"abstract":"The aim of this paper is to describe coking and deactivation of zeolite catalysts. This description is based on the results obtained during n-heptane cracking and propene transformation at 723 °K on protonic zeolites","PeriodicalId":20402,"journal":{"name":"Preprints-American Chemical Society Division of Petroleum Chemistry","volume":"62 1","pages":"366-369"},"PeriodicalIF":0.0,"publicationDate":"1995-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74941474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-12-01DOI: 10.1016/B978-012508460-4/50003-6
James B. Miller, E. I. Ko
{"title":"The Role of Prehydrolysis in the Preparation of Zirconia—Silica Aerogels","authors":"James B. Miller, E. I. Ko","doi":"10.1016/B978-012508460-4/50003-6","DOIUrl":"https://doi.org/10.1016/B978-012508460-4/50003-6","url":null,"abstract":"","PeriodicalId":20402,"journal":{"name":"Preprints-American Chemical Society Division of Petroleum Chemistry","volume":"336 1","pages":"21-41"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78046502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-08-13DOI: 10.1017/s0424820100138452
A. Datye, D. Kalakkad, L. Allard, E. Völkl
This paper describes some of the challenges in the study of heterogeneous catalysts, and provide examples of how electron holography can help in extracting details of structure and morphology on an atomic scale.
{"title":"Electron holography of catalysts","authors":"A. Datye, D. Kalakkad, L. Allard, E. Völkl","doi":"10.1017/s0424820100138452","DOIUrl":"https://doi.org/10.1017/s0424820100138452","url":null,"abstract":"This paper describes some of the challenges in the study of heterogeneous catalysts, and provide examples of how electron holography can help in extracting details of structure and morphology on an atomic scale.","PeriodicalId":20402,"journal":{"name":"Preprints-American Chemical Society Division of Petroleum Chemistry","volume":"7 1","pages":"190-191"},"PeriodicalIF":0.0,"publicationDate":"1995-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74373071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-01-01DOI: 10.1007/978-1-4615-1807-5_3
J. Sárkány, Qun Sun, J. I. D. Cosimo, R. Herman, K. Klier
{"title":"Oxidative Coupling of Methane Over Sulfated SrO/La2O3 Catalysts","authors":"J. Sárkány, Qun Sun, J. I. D. Cosimo, R. Herman, K. Klier","doi":"10.1007/978-1-4615-1807-5_3","DOIUrl":"https://doi.org/10.1007/978-1-4615-1807-5_3","url":null,"abstract":"","PeriodicalId":20402,"journal":{"name":"Preprints-American Chemical Society Division of Petroleum Chemistry","volume":"15 1","pages":"31-38"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77661662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-01-01DOI: 10.1021/bk-1996-0634.ch021
R. Wormsbecher, W. Cheng, R. Harding
This paper reports a study on which mechanism, particle-to-particle or vapor phase transport, is responsible for the mobility of vanadium in the FCC Unit. The approach used in this work is to measure the rate of vanadium transport to a basic oxide vanadium trap in fluid bed experiments. By varying the particle size distribution, the collision frequency can be changed and the rate of transport determined. Also, calculations of the mass transfer of a vapor species ina fluid are performed.
{"title":"Vanadium mobility in fluid catalytic cracking","authors":"R. Wormsbecher, W. Cheng, R. Harding","doi":"10.1021/bk-1996-0634.ch021","DOIUrl":"https://doi.org/10.1021/bk-1996-0634.ch021","url":null,"abstract":"This paper reports a study on which mechanism, particle-to-particle or vapor phase transport, is responsible for the mobility of vanadium in the FCC Unit. The approach used in this work is to measure the rate of vanadium transport to a basic oxide vanadium trap in fluid bed experiments. By varying the particle size distribution, the collision frequency can be changed and the rate of transport determined. Also, calculations of the mass transfer of a vapor species ina fluid are performed.","PeriodicalId":20402,"journal":{"name":"Preprints-American Chemical Society Division of Petroleum Chemistry","volume":"11 1","pages":"482-486"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82525844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-01-01DOI: 10.1007/978-1-4615-1807-5_8
W. M. Yang, Q. Yan, X. Fu
{"title":"A Comparative Study of Catalytic Behaviours of Sr-Ti, Sr-Zr, Sr-Sn Perovskites and Corresponding Layered Perovskites for the Oxidative Coupling of Methane","authors":"W. M. Yang, Q. Yan, X. Fu","doi":"10.1007/978-1-4615-1807-5_8","DOIUrl":"https://doi.org/10.1007/978-1-4615-1807-5_8","url":null,"abstract":"","PeriodicalId":20402,"journal":{"name":"Preprints-American Chemical Society Division of Petroleum Chemistry","volume":"6 1","pages":"71-77"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76533183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-01-01DOI: 10.1016/B978-012508460-4/50022-X
J. Katz, P. Miquel
{"title":"Formation of nanostructured V2O5-based catalysts in flames","authors":"J. Katz, P. Miquel","doi":"10.1016/B978-012508460-4/50022-X","DOIUrl":"https://doi.org/10.1016/B978-012508460-4/50022-X","url":null,"abstract":"","PeriodicalId":20402,"journal":{"name":"Preprints-American Chemical Society Division of Petroleum Chemistry","volume":"134 1","pages":"40-43"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86319879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-01-01DOI: 10.1007/978-1-4615-1807-5_1
M. M. Bhasin, K. D. Campbell
{"title":"Oxidative Coupling of Methane-A Progress Report","authors":"M. M. Bhasin, K. D. Campbell","doi":"10.1007/978-1-4615-1807-5_1","DOIUrl":"https://doi.org/10.1007/978-1-4615-1807-5_1","url":null,"abstract":"","PeriodicalId":20402,"journal":{"name":"Preprints-American Chemical Society Division of Petroleum Chemistry","volume":"93 1","pages":"3-17"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81679737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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