Catalyst compositions and methods for alcohol production from synthesis gas
AssigneeRange Fuels, Inc.
InventorKarl KHARAS
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Abstract
In one aspect of this invention, catalytic compositions produced by calcining intermediates of the formula [NR4]x[M12M2S8] are provided, wherein M1 is Mo or W; M2 is Co, Ni, or Pd; x is 2 or 3; and R is a C3-C8 alkyl group. Another aspect provides catalytic compositions produced by calcining intermediates of the formula Ax[M12M2S8], wherein A is selected from K, Rb, Cs, Sr, and Ba. Also provided are methods for making the compositions, and methods of using the compositions for the catalytic conversion of syngas into C1-C4 alcohols such as ethanol.
Claims30
A composition produced by the method comprising:
- (a) obtaining a compound having the formula [NR4]x[M12M2S8], wherein:
- (i) M1 is Mo or W;
- (ii) M2 is Co, Ni, or Pd;
- (iii) x is 2 or 3;
- (iv) R is a C3-C8 alkyl group;
- (v) x is 2 when M2 is Ni or Pd;
- and
- (vi) x is 3 when M1 is Mo and M2 is Co;
- and
- (b) calcining said compound under a substantially inert atmosphere.
A composition produced by the method comprising:
- (a) obtaining a compound having the formula Ax[M12M2S8], wherein:
- A is selected from the group consisting of K, Rb, Cs;
- M1 is Mo or W;
- M2 is Co, Ni, or Pd;
- x is 2 or 3;
- x is 2 when M2 is Ni or Pd;
- x is 3 when M1 is Mo and M2 is Co;
- and
- (b) calcining said compound under a substantially inert atmosphere.
A composition produced by the method comprising:
- (a) obtaining a compound having the formula Ax[M12M2S8], wherein:
- A is selected from the group consisting of Sr and Ba;
- M1 is Mo or W;
- M2 is Co, Ni, or Pd;
- x is 1 or 1.5;
- x is 1 when M2 is Ni or Pd;
- and
- x is 1.5 when M1 is Mo and M2 is Co;
- and
- (b) calcining said compound under a substantially inert atmosphere.
A composition comprising:
- (a) at least one Group VIB element selected from molybdenum and tungsten;
- (b) at least one Group VIII element selected from cobalt, nickel, and palladium;
- and
- (c) sulfur;
- wherein the molar ratio of sulfur to the combined total of the at least one Group VIB element and the at least one Group VIII element is at least about 1.9:1;
- wherein the molar ratio of said at least one Group VIB element to said at least one Group VIII element is 2:1;
- wherein said composition is essentially free of a crystalline phase disulfide of said at least one Group VIII element;
- and
- wherein said composition is capable of catalyzing the conversion of syngas into one or more reaction products comprising at least one C1-C4 alcohol when in the presence of a suitable catalytic promoter.
Dependencies are inferred from the claim text.