2017
DOI: 10.1016/j.jscs.2017.05.004
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Comparative catalytic evaluation of nickel and cobalt substituted phosphomolybdic acid catalyst supported on silica for hydrodesulfurization of thiophene

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Cited by 21 publications
(16 citation statements)
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“…As mentioned earlier, the research directed to modulate the metal-support interaction can be envisaged from many viewpoints, such as the use of crystallographic phases different from the typical gamma alumina [38] or supporting the active phases over unconventional single metal (Ms) oxides such as those based on Ti [26,[39][40][41][42][43][44][45], Zr [26,[41][42][43][44]46,47], Si [23,26,[48][49][50] or Ga [51]. Nevertheless, more recently to gain advantage from the individual single metal oxide properties and to overcome their intrinsic limitations, several binary mixed oxide materials such as Al2O3-Ga2O3 [50], Al2O3-TiO2 [4,52-57], ZrO2-TiO2 [35,58,59], Al2O3-ZrO2 [60][61][62], MgO-TiO2 [63], Al2O3-MgO [56,64], Mn-Al2O3 [65][66][67], and Al2O3-zeolite [68] have been studied, among several others that have been tested to prepare HDS catalysts. As expected, in several cases higher activities of catalysts prepared over those mixed oxides were reported compared with those supported on alumina.…”
Section: Mixed Oxides Support: a Different Approachmentioning
confidence: 99%
“…As mentioned earlier, the research directed to modulate the metal-support interaction can be envisaged from many viewpoints, such as the use of crystallographic phases different from the typical gamma alumina [38] or supporting the active phases over unconventional single metal (Ms) oxides such as those based on Ti [26,[39][40][41][42][43][44][45], Zr [26,[41][42][43][44]46,47], Si [23,26,[48][49][50] or Ga [51]. Nevertheless, more recently to gain advantage from the individual single metal oxide properties and to overcome their intrinsic limitations, several binary mixed oxide materials such as Al2O3-Ga2O3 [50], Al2O3-TiO2 [4,52-57], ZrO2-TiO2 [35,58,59], Al2O3-ZrO2 [60][61][62], MgO-TiO2 [63], Al2O3-MgO [56,64], Mn-Al2O3 [65][66][67], and Al2O3-zeolite [68] have been studied, among several others that have been tested to prepare HDS catalysts. As expected, in several cases higher activities of catalysts prepared over those mixed oxides were reported compared with those supported on alumina.…”
Section: Mixed Oxides Support: a Different Approachmentioning
confidence: 99%
“…So, FT-IR spectra of pristine PMA and the Cu-PMo catalyst were exhibited in Fig. 2 19 . Moreover, from the FT-IR spectrum of Cu-PMo, Keggin structure of Cu-PMo catalysts was found to remain unchanged, despite slight intensify in some peak strengths, which may be ascribed to the copper II ion was successfully exchanged with hydrogen from the PMA, this is similar to the result obtained by XRD.…”
Section: Ft-ir Analysis Of the Catalystmentioning
confidence: 99%
“…In the case of pristine PMA, the strong absorption of PMA with Keggin structure band of 1064 cm À1 , 968 cm À1 , 874 cm À1 and 787 cm À1 can be assigned to the P-O, Mo]O, Mo-Oc-Mo and Mo-Oe-Mo asymmetric stretching vibrations, respectively. 37 Comparing with that of pristine PMA, PMA/Fe-BTC exhibits similar four characteristic vibration peaks at 1064 cm À1 , 968 cm À1 , 874 cm À1 and 814 cm À1 . All the results suggest that PMA has been successfully encaged into the cavities of Fe-BTC and the classical Keggin structures were retained.…”
Section: Resultsmentioning
confidence: 93%