Ammoxidation of Propane on Nickel Antimonates

Factors limiting selectivity in C3 and C4 amm(oxidation) reactions

“…with  representing results from USPatent 5,336,804 (1994) and (B) propene ! acrylonitrile, Refs [16,[102][103][104][105][106][107]…”

Partial Oxidation of Methane over M-Sb-Te-O (M = Transition Metal) Catalysts

“…Several investigators have recently reported that M-Sb-O such as NiSbOx, GaSbOx, VSbOx, MoSbOx, FeSbOx, and ReSb2Ox showed appreciable activities for the ammoxidation of hydrocarbons. [16][17][18][19][20] In the M-Sb-O catalysts for the ammoxidation of hydrocarbons, hydrocarbon molecules are activated by metal antimonate and antimony is considered to facilitate the abstraction of hydrogen from hydrocarbon molecules. The results give an feasibility that M-Sb-O (M = transition metal) phases act as active components in the partial oxidation of methane.…”

Unique Performance and Characterization of a Crystalline SbRe2O6Catalyst for Selective Ammoxidation of Isobutane

“…A large number of mixedoxide catalysts for these reactions have been investigated to date. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] However, owing to the inertness of alkanes, very few catalysts have displayed good performances comparable to those for the corresponding alkene processes, despite the extensive scientific studies. The only commercial example of use of alkane so far is n-butane oxidation to maleic anhydride on V-P-O catalysts.…”

“…Re oxides possess redox properties similar to those of V, Mo, and W oxides, 15 which have been extensively used as main components in various oxidation catalysts. [1][2][3][4][8][9][10][11][12][13][14][15][16][17][18][19][20] So Re may also be a key catalytic element capable of activating hydrocarbons for selective oxidation, notwithstanding the fact that it has found hitherto few applications to the oxidation of methanol and ethanol. [17][18][19][20][21][22][23][24] On the other hand, Sb is well-known to constitute a promoter element in various mixed-oxide formulations such as V-Sb-O, Sn-Sb-O, Mo-Sb-O, Fe-Sb-O, and U-Sb-O.…”

“…[17][18][19][20][21][22][23][24] On the other hand, Sb is well-known to constitute a promoter element in various mixed-oxide formulations such as V-Sb-O, Sn-Sb-O, Mo-Sb-O, Fe-Sb-O, and U-Sb-O. [1][2][3][4][5][6][7][8][9][10][11][12][25][26][27][28][29][30] In these catalysts, Sb oxides are considered to facilitate the abstraction of an allylic hydrogen from hydrocarbon molecules as well as the subsequent oxygen or nitrogen insertion into allylic intermediate species. Our recent results concerning the Pt/SbO x catalyst for the selective oxidation of isobutane and isobutylene to methacrolein also show that the Sb 6 O 13 suboxide phase formed under the catalytic oxidation conditions contributes to the oxygen insertion to allylic intermediates in a synergetic manner with Pt particles.…”