FABRICATION OF SPINEL COATING ON HP40 ALLOY AND ITS INHIBITION EFFECT ON CATALYTIC COKING DURING THERMAL CRACKING OF LIGHT NAPHTHA

Detalhes bibliográficos
Autor(a) principal: Bao,Binbin
Data de Publicação: 2018
Outros Autores: Liu,Jinglei, Xu,Hong, Wang,Zhiyuan, Zhang,Kai
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Chemical Engineering
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322018000200721
Resumo: Abstract A novel two-step process of Cr-Mn pack cementation and thermal oxidation was applied to fabricate a MnCr2O4 spinel coating on HP 40 alloy. The Cr-Mn diffusion layer formed after the Cr-Mn pack cementation process is lacking in Fe and Ni. A dense and uniform coating formed on the alloy following thermal oxidation. The coating is mainly composed of MnCr2O4 spinel phase, while the outer surface of the coating is completely MnCr2O4 spinel. The coating exhibits a favorable thickness of about 7 µm according to SEM and EDS maps of its cross-section. The MnCr2O4 spinel coating significantly affects the coking mechanism and coke property according to coking experiments. Raman spectroscopy shows that the coated sample inhibits catalytic coke formation as more disordered carbon and amorphous carbon layers are present. Moreover, the coating is stable in coking and decoking environments.
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spelling FABRICATION OF SPINEL COATING ON HP40 ALLOY AND ITS INHIBITION EFFECT ON CATALYTIC COKING DURING THERMAL CRACKING OF LIGHT NAPHTHAPack cementationThermal oxidationSpinel coatingCatalytic cokingThermal crackingAbstract A novel two-step process of Cr-Mn pack cementation and thermal oxidation was applied to fabricate a MnCr2O4 spinel coating on HP 40 alloy. The Cr-Mn diffusion layer formed after the Cr-Mn pack cementation process is lacking in Fe and Ni. A dense and uniform coating formed on the alloy following thermal oxidation. The coating is mainly composed of MnCr2O4 spinel phase, while the outer surface of the coating is completely MnCr2O4 spinel. The coating exhibits a favorable thickness of about 7 µm according to SEM and EDS maps of its cross-section. The MnCr2O4 spinel coating significantly affects the coking mechanism and coke property according to coking experiments. Raman spectroscopy shows that the coated sample inhibits catalytic coke formation as more disordered carbon and amorphous carbon layers are present. Moreover, the coating is stable in coking and decoking environments.Brazilian Society of Chemical Engineering2018-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322018000200721Brazilian Journal of Chemical Engineering v.35 n.2 2018reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/0104-6632.20180352s20160670info:eu-repo/semantics/openAccessBao,BinbinLiu,JingleiXu,HongWang,ZhiyuanZhang,Kaieng2018-09-17T00:00:00Zoai:scielo:S0104-66322018000200721Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2018-09-17T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv FABRICATION OF SPINEL COATING ON HP40 ALLOY AND ITS INHIBITION EFFECT ON CATALYTIC COKING DURING THERMAL CRACKING OF LIGHT NAPHTHA
title FABRICATION OF SPINEL COATING ON HP40 ALLOY AND ITS INHIBITION EFFECT ON CATALYTIC COKING DURING THERMAL CRACKING OF LIGHT NAPHTHA
spellingShingle FABRICATION OF SPINEL COATING ON HP40 ALLOY AND ITS INHIBITION EFFECT ON CATALYTIC COKING DURING THERMAL CRACKING OF LIGHT NAPHTHA
Bao,Binbin
Pack cementation
Thermal oxidation
Spinel coating
Catalytic coking
Thermal cracking
title_short FABRICATION OF SPINEL COATING ON HP40 ALLOY AND ITS INHIBITION EFFECT ON CATALYTIC COKING DURING THERMAL CRACKING OF LIGHT NAPHTHA
title_full FABRICATION OF SPINEL COATING ON HP40 ALLOY AND ITS INHIBITION EFFECT ON CATALYTIC COKING DURING THERMAL CRACKING OF LIGHT NAPHTHA
title_fullStr FABRICATION OF SPINEL COATING ON HP40 ALLOY AND ITS INHIBITION EFFECT ON CATALYTIC COKING DURING THERMAL CRACKING OF LIGHT NAPHTHA
title_full_unstemmed FABRICATION OF SPINEL COATING ON HP40 ALLOY AND ITS INHIBITION EFFECT ON CATALYTIC COKING DURING THERMAL CRACKING OF LIGHT NAPHTHA
title_sort FABRICATION OF SPINEL COATING ON HP40 ALLOY AND ITS INHIBITION EFFECT ON CATALYTIC COKING DURING THERMAL CRACKING OF LIGHT NAPHTHA
author Bao,Binbin
author_facet Bao,Binbin
Liu,Jinglei
Xu,Hong
Wang,Zhiyuan
Zhang,Kai
author_role author
author2 Liu,Jinglei
Xu,Hong
Wang,Zhiyuan
Zhang,Kai
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Bao,Binbin
Liu,Jinglei
Xu,Hong
Wang,Zhiyuan
Zhang,Kai
dc.subject.por.fl_str_mv Pack cementation
Thermal oxidation
Spinel coating
Catalytic coking
Thermal cracking
topic Pack cementation
Thermal oxidation
Spinel coating
Catalytic coking
Thermal cracking
description Abstract A novel two-step process of Cr-Mn pack cementation and thermal oxidation was applied to fabricate a MnCr2O4 spinel coating on HP 40 alloy. The Cr-Mn diffusion layer formed after the Cr-Mn pack cementation process is lacking in Fe and Ni. A dense and uniform coating formed on the alloy following thermal oxidation. The coating is mainly composed of MnCr2O4 spinel phase, while the outer surface of the coating is completely MnCr2O4 spinel. The coating exhibits a favorable thickness of about 7 µm according to SEM and EDS maps of its cross-section. The MnCr2O4 spinel coating significantly affects the coking mechanism and coke property according to coking experiments. Raman spectroscopy shows that the coated sample inhibits catalytic coke formation as more disordered carbon and amorphous carbon layers are present. Moreover, the coating is stable in coking and decoking environments.
publishDate 2018
dc.date.none.fl_str_mv 2018-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322018000200721
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322018000200721
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-6632.20180352s20160670
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
dc.source.none.fl_str_mv Brazilian Journal of Chemical Engineering v.35 n.2 2018
reponame:Brazilian Journal of Chemical Engineering
instname:Associação Brasileira de Engenharia Química (ABEQ)
instacron:ABEQ
instname_str Associação Brasileira de Engenharia Química (ABEQ)
instacron_str ABEQ
institution ABEQ
reponame_str Brazilian Journal of Chemical Engineering
collection Brazilian Journal of Chemical Engineering
repository.name.fl_str_mv Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)
repository.mail.fl_str_mv rgiudici@usp.br||rgiudici@usp.br
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