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...
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2014-06-01
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Series: | Materials Research |
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Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400005&tlng=en |
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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 |
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