Catalytic properties of early transition metal nitrides and carbides: n-butane hydrogenolysis, dehydrogenation and isomerization

Neylon, Michael K.; Choi, Sunghyun; Kwon, Hyuk-Sung; Curry, K. E.; Thompson, Levi T.

doi:10.1016/s0926-860x(99)00053-8

Cited by 181 publications

(77 citation statements)

References 40 publications

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“…There are, therefore, numerous reports on the use of early-transition-metal carbides and nitrides as catalysts for hydroprocessing (including hydrodesulfurisation, hydrodenitrogenation and hydrodeoxygenation reactions), [3,4] hydrogenation, [5,6] dehydrogenation [7] or isomerisation reactions. [8,9] Surprisingly, much less effort has been devoted to the use of such catalysts for fine chemical applications. To the best of our knowledge, only TiN found such applications, namely, for the selective hydrogenation of CÀC multiple bonds [10] or as a catalyst for the alkylation of ketones with alcohols (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Early‐Transition‐Metal Carbide and Nitride Nanoparticles through the Urea Route and Their Use as Alkylation Catalysts

Yao

Makowski

Giordano

et al. 2009

Chemistry A European J

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The use of urea as either a carbon or a nitrogen source enabled the synthesis of various early-transition-metal nitride and carbide nanoparticles (TiN, NbN, Mo(2)N, W(2)N, NbC(x)N(1-x), Mo(2)C and WC). The ability of these particles to promote alkylation reactions with alcohols was tested on benzyl alcohol and acetophenone at 150 degrees C for 20 h in xylene. Group IV and V ceramics proved to be able to catalyse the formation of 1,3-diphenyl propenone, whereas group VI ceramics showed a tendency to promote the Friedel-Crafts-type reaction of benzyl alcohol on xylene (the solvent). TiN featured the highest activity for the alkylation of ketones and was further tested for more difficult alkylations. Group VI ceramics were further investigated as catalysts for the Friedel-Crafts-type alkylation of aromatics with activated alcohols. Interestingly, even hexanol could be effectively used for these reactions.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Early‐Transition‐Metal Carbide and Nitride Nanoparticles through the Urea Route and Their Use as Alkylation Catalysts

Yao

Makowski

Giordano

et al. 2009

Chemistry A European J

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“…Carbides are also found to be active for dehydrogenation, hydrogenation, isomerisition, hydrocracking and some reactions typically catalysed by noble metals [23][24][25][26][27][28][29]. So carbide supported on HZSM-5 are expected to be able to catalyse the upgrading of n-C 4 H 10 .…”

Section: Introductionmentioning

confidence: 99%

Relationship between the molybdenum phases and the conversion of n-butane over Mo/HZSM-5

Yuan

Hamid

et al. 2002

Journal of Molecular Catalysis A: Chemical

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“…The transition metal carbides have comparable catalytic performance to noble metals, as pointed out by the pioneering work of Volpe and Boudart [5]. Such catalytic behavior has been demonstrated in hydrodesulfurization (HDS) of oil and gas [6], hydrocarbon isomerization [7] and CH4 reforming to synthesis gas [8].…”

Section: Introductionmentioning

confidence: 92%

Synthesis of tungsten carbide on Al-SBA-15 mesoporous materials by carburization

Álvarez

Chimentão

Tichit

et al. 2016

Microporous and Mesoporous Materials

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a b s t r a c t Aluminum was incorporated into SBA-15 supports at molar ratios Si/Al ¼ 10 and 2 by the pH-adjusting method. The calcined mesoporous Al-SBA-15 supports, as well as the Al-free SBA-15 support, were impregnated with ammonium paratungstate ((NH4)10[H2W12O42]4H2O) aqueous solution. Tungsten carbide (W2C) was synthesized by temperature programmed carburization (TPC) from the WO3 supported on Al-SBA-15 and SBA-15 in a flow of CH4/H2. These resultant materials were characterized by powder X-ray diffraction (XRD), N2 adsorption/desorption, 27 Al NMR and Raman spectroscopies, and transmission electron microscopies (TEM and HRTEM). W2C species were obtained after the carburization process in all the materials. The mesoporous structure of the SBA-15 supports was preserved at all synthesis steps. XRD and TEM analyses revealed that the introduction of aluminum species into the SBA-15 greatly enhanced the dispersion of WO3 and W2C phases during the calcination and carburization steps, respectively. In situ XRD measured during the carburization in a synchrotron facility provided further details of the reduction of tungsten trioxide species as a function of temperature. The presence of aluminum in the SBA-15 notably affected the distribution and the reduction temperature of the tungsten oxide species.

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Catalytic properties of early transition metal nitrides and carbides: n-butane hydrogenolysis, dehydrogenation and isomerization

Cited by 181 publications

References 40 publications

Synthesis of Early‐Transition‐Metal Carbide and Nitride Nanoparticles through the Urea Route and Their Use as Alkylation Catalysts

Synthesis of Early‐Transition‐Metal Carbide and Nitride Nanoparticles through the Urea Route and Their Use as Alkylation Catalysts

Relationship between the molybdenum phases and the conversion of n-butane over Mo/HZSM-5

Synthesis of tungsten carbide on Al-SBA-15 mesoporous materials by carburization

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