caa a22 4500 463253949 CHVBK 20180405153348.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10562-007-9143-4 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9143-4 High activity Ni/MoS2 catalysts obtained from alkylthiometalate mixtures for the hydrodesulfurization of dibenzothiophene [Elektronische Daten] [M. Poisot, W. Bensch, S. Fuentes, C. Ornelas, G. Alonso] An efficient method for improving the catalytic properties of unsupported Ni/MoS2 catalysts is mixing thiometalate precursors applying the appropriate precursors and thermal conditions. High active catalysts for the hydrodesulfurization (HDS) of dibenzothiophene (DBT) are prepared by the controlled decomposition of physical mixtures of Ni(diethylentriamine)2MoS4 (NDTA-TM) and [(Propyl)4N)]2MoS4 (TPA-TM). The catalysts with a higher content of NDTA-TM are very active with a high selectivity for the direct desulfurization pathway (DDS) due to the synergistic effect of nickel. In addition the presence of a large amount of carbon may produce single-slabs of nickel promoted carbon containing molybdenum sulfides. The activity enhancement is attributed to an increased number of NiMoS active sites originated by the chemical interaction between the precursors NDTA-TM and TPA-TM during the mixing procedure. Furthermore, the carbon content in the final products is related to the enhancement of the activity and the preference of the DDS pathway. The controlled decomposition of mixtures of NDTA-TM+TPA-TM yields catalysts which are about twofold more active than an industrial NiMo/Al2O3 catalyst. This improvement may be attributed to an intense interaction of the precursors during the synthesis causing a re-dispersion of nickel atoms from NDTA-TM over the surface of carbon containing molybdenum sulfide provided by the precursor TPA-TM, increasing the amount of active sites. The catalysts from mixtures of (NH4)2MoS4 (A-TM) and NDTA-TM behave similarly to the pure precursors. Springer Science+Business Media, LLC, 2007 thiometalates nationallicence Ni/MoS2 catalysts nationallicence HDS of DBT nationallicence Ni(diethylenetriamine)2MoS4 nationallicence (NH4)2MoS4 nationallicence (Propyl4N)2MoS4 nationallicence Poisot M. Institut für Anorganische Chemie, University of Kiel, Olshausenstr. 40-60, 24118, Kiel, Germany aut Bensch W. Institut für Anorganische Chemie, University of Kiel, Olshausenstr. 40-60, 24118, Kiel, Germany aut Fuentes S. Centro de Ciencias de la Materia Condensada, UNAM, C.P. 22860, Ensenada, Baja California, México aut Ornelas C. Centro de Investigación en Materiales Avanzados S. C., C.P. 31109, Chihuahua, Chih, México aut Alonso G. Centro de Investigación en Materiales Avanzados S. C., C.P. 31109, Chihuahua, Chih, México aut Catalysis Letters Springer US; http://www.springer-ny.com 117/1-2(2007-08-01), 43-52 1011-372X 117:1-2<43 2007 117 10562 https://doi.org/10.1007/s10562-007-9143-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9143-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Poisot M. Institut für Anorganische Chemie, University of Kiel, Olshausenstr. 40-60, 24118, Kiel, Germany aut NATIONALLICENCE 700 1- Bensch W. Institut für Anorganische Chemie, University of Kiel, Olshausenstr. 40-60, 24118, Kiel, Germany aut NATIONALLICENCE 700 1- Fuentes S. Centro de Ciencias de la Materia Condensada, UNAM, C.P. 22860, Ensenada, Baja California, México aut NATIONALLICENCE 700 1- Ornelas C. Centro de Investigación en Materiales Avanzados S. C., C.P. 31109, Chihuahua, Chih, México aut NATIONALLICENCE 700 1- Alonso G. Centro de Investigación en Materiales Avanzados S. C., C.P. 31109, Chihuahua, Chih, México aut NATIONALLICENCE 773 0- Catalysis Letters Springer US; http://www.springer-ny.com 117/1-2(2007-08-01), 43-52 1011-372X 117:1-2<43 2007 117 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer