Evaluation of calcined hydrocalumite-type materials as supports of CoMo and NiMo for thiophene hydrodesulfuration reaction

A hydrocalumite-type material (HC) was synthesized by the co-precipitation method, mixing Ca and Al nitrate solutions in a NaOH solution (pH ≅ 11). This solid was characterized by using different physico-chemical techniques such as: Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction...

Full description

Bibliographic Details
Main Authors: Carlos Felipe Linares, Pablo Bretto, Ruth Álvarez, Freddy Ocanto, Carolina Corao, Paulino Betancourt, Joaquín Luis Brito
Format: Article
Language:English
Published: Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) 2014-06-01
Series:Materials Research
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400005&tlng=en
_version_ 1818951964053995520
author Carlos Felipe Linares
Pablo Bretto
Ruth Álvarez
Freddy Ocanto
Carolina Corao
Paulino Betancourt
Joaquín Luis Brito
author_facet Carlos Felipe Linares
Pablo Bretto
Ruth Álvarez
Freddy Ocanto
Carolina Corao
Paulino Betancourt
Joaquín Luis Brito
author_sort Carlos Felipe Linares
collection DOAJ
description A hydrocalumite-type material (HC) was synthesized by the co-precipitation method, mixing Ca and Al nitrate solutions in a NaOH solution (pH ≅ 11). This solid was characterized by using different physico-chemical techniques such as: Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), temperature programmed reduction (TPR) and BET surface area measurements. Then, a portion of as-synthesized solid was calcined at 420 ºC (HC 420). Both calcined and pristine solids were impregnated with Mo (15% w/w as MoO3). Ni or Co was also impregnated on Mo/HC or Mo/HC 420 in 1(Co or Ni):3 (Mo) atomic ratios to get catalytic precursors. These solids were also characterized by the above mentioned techniques. Catalytic precursors were tested in the thiophene hydrodesulfuration reaction at 280 ºC and atmospheric pressure. Cobalt promoted catalysts were more active than those promoted with Ni. However, thiophene conversions were lower than that of a conventional CoMo/γ-Al2O3 catalyst.
first_indexed 2024-12-20T09:42:50Z
format Article
id doaj.art-e54d1119dfbf4225816c0ed6688262f4
institution Directory Open Access Journal
issn 1516-1439
language English
last_indexed 2024-12-20T09:42:50Z
publishDate 2014-06-01
publisher Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
record_format Article
series Materials Research
spelling doaj.art-e54d1119dfbf4225816c0ed6688262f42022-12-21T19:44:50ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392014-06-0117482382810.1590/S1516-14392014005000085Evaluation of calcined hydrocalumite-type materials as supports of CoMo and NiMo for thiophene hydrodesulfuration reactionCarlos Felipe Linares0Pablo Bretto1Ruth Álvarez2Freddy Ocanto3Carolina Corao4Paulino Betancourt5Joaquín Luis Brito6Universidad de CaraboboUniversidad de CaraboboUniversidad de CaraboboUniversidad de CaraboboUniversidad de CaraboboUniversidad Central de VenezuelaInstituto Venezolano de Investigaciones CientíficasA hydrocalumite-type material (HC) was synthesized by the co-precipitation method, mixing Ca and Al nitrate solutions in a NaOH solution (pH ≅ 11). This solid was characterized by using different physico-chemical techniques such as: Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), temperature programmed reduction (TPR) and BET surface area measurements. Then, a portion of as-synthesized solid was calcined at 420 ºC (HC 420). Both calcined and pristine solids were impregnated with Mo (15% w/w as MoO3). Ni or Co was also impregnated on Mo/HC or Mo/HC 420 in 1(Co or Ni):3 (Mo) atomic ratios to get catalytic precursors. These solids were also characterized by the above mentioned techniques. Catalytic precursors were tested in the thiophene hydrodesulfuration reaction at 280 ºC and atmospheric pressure. Cobalt promoted catalysts were more active than those promoted with Ni. However, thiophene conversions were lower than that of a conventional CoMo/γ-Al2O3 catalyst.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400005&tlng=enhydrocalumitehydrotreatmentthiopheneCoMoNiMo
spellingShingle Carlos Felipe Linares
Pablo Bretto
Ruth Álvarez
Freddy Ocanto
Carolina Corao
Paulino Betancourt
Joaquín Luis Brito
Evaluation of calcined hydrocalumite-type materials as supports of CoMo and NiMo for thiophene hydrodesulfuration reaction
Materials Research
hydrocalumite
hydrotreatment
thiophene
CoMo
NiMo
title Evaluation of calcined hydrocalumite-type materials as supports of CoMo and NiMo for thiophene hydrodesulfuration reaction
title_full Evaluation of calcined hydrocalumite-type materials as supports of CoMo and NiMo for thiophene hydrodesulfuration reaction
title_fullStr Evaluation of calcined hydrocalumite-type materials as supports of CoMo and NiMo for thiophene hydrodesulfuration reaction
title_full_unstemmed Evaluation of calcined hydrocalumite-type materials as supports of CoMo and NiMo for thiophene hydrodesulfuration reaction
title_short Evaluation of calcined hydrocalumite-type materials as supports of CoMo and NiMo for thiophene hydrodesulfuration reaction
title_sort evaluation of calcined hydrocalumite type materials as supports of como and nimo for thiophene hydrodesulfuration reaction
topic hydrocalumite
hydrotreatment
thiophene
CoMo
NiMo
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400005&tlng=en
work_keys_str_mv AT carlosfelipelinares evaluationofcalcinedhydrocalumitetypematerialsassupportsofcomoandnimoforthiophenehydrodesulfurationreaction
AT pablobretto evaluationofcalcinedhydrocalumitetypematerialsassupportsofcomoandnimoforthiophenehydrodesulfurationreaction
AT ruthalvarez evaluationofcalcinedhydrocalumitetypematerialsassupportsofcomoandnimoforthiophenehydrodesulfurationreaction
AT freddyocanto evaluationofcalcinedhydrocalumitetypematerialsassupportsofcomoandnimoforthiophenehydrodesulfurationreaction
AT carolinacorao evaluationofcalcinedhydrocalumitetypematerialsassupportsofcomoandnimoforthiophenehydrodesulfurationreaction
AT paulinobetancourt evaluationofcalcinedhydrocalumitetypematerialsassupportsofcomoandnimoforthiophenehydrodesulfurationreaction
AT joaquinluisbrito evaluationofcalcinedhydrocalumitetypematerialsassupportsofcomoandnimoforthiophenehydrodesulfurationreaction