Abstract:
Catalysts comprising a medium to large port zeolite modified with a reducible metal salt of an element selected from the group consisting of Group VIII, IB or IIB elements and, a Fischer-Tropsch catalyst wherein the ratio of zeolite to Fischer-Tropsch component is from 0.1 to 50:1 can be employed to produce liquid paraffins from synthesis gas. A process is employed which includes the step of contacting synthesis gas having a ratio of hydrogen to carbon oxides of from 0.1 to 10.0:1 over the foregoing catalyst at a reaction temperature of from 100"Cto 500°C and at a pressure of from one atmosphere (0.1 MPa) to 200 atmospheres (20 MPa) and at a gas hourly spaced velocity of from 10 to 100,000. A method is also provided for the preparation of the combination catalyst. The liquid paraffin product produced is highly branched, relatively free from olefins and totally free from detectable oxygenates.
Abstract:
A molecular sieving metallosilicate is disclosed which comprises a complex represented in terms of mole ratios of oxides by the formula:
wherein A is an ammonium, alkyl ammonium, alkyl phosphonium or alkyl arsonium ion; D is an alkali or alkaline earth metal ion or a mixture of two or more thereof; E is selected from the group consisting of A1, B, Mo, W, Fe, or a mixture of two or more thereof; M is a tetravalent metal selected from the Lanthanide or Actinide series; a is a number ranging from zero to about 25; b is a number ranging from zero to about 1.5; c is a number ranging from zero to about 0.3; d is a number ranging from about 20 to about 500; e is a number ranging from zero to about 200. The X-ray diffraction pattern for these metallosilicates indicates a ZSM-5 like crystalline structure. A method for making these metallosilicates, and a method for dehydrating and reforming methanol using these metallosilicates are disclosed.
Abstract:
Catalysts comprising a silica molecular sieve modified by a metal which forms acidic oxides selected from the group consisting of Group VIB and VIIB elements and, a Fischer-Tropsch catalyst wherein the ratio of zeolite to Fischer-Tropsch component is from 0.1 to 10:1 can be employed to produce gasoline quality liquid hydrocarbons from synthesis gas. A process is employed which includes the step of contacting synthesis gas having a ratio of hydrogen to carbon oxides of from 0.1 to 10.0:1 over the foregoing catalyst at a reaction temperature of from 100 . C to 500°C and at a pressure of from one atmosphere (0.1 MPa) to 200 atmospheres (20 MPa) and at a gas hourly space velocity of from 10 to 100,000. A method is also provided for the preparation of the combination catalyst. The liquid hydrocarbon product is highly aromatic, essentially free of external olefins and totally free of detectable oxygenates.
Abstract:
A method for making molecular sieving high silica mordenite comprises the steps of:
(A) providing a mixture comprising: water, an oxide of silicon source; an oxide of aluminum source; a mineralizing agent; and a synthesis directing nitrogen containing organic dye; and (B) maintaining said mixture at a temperature of about 80°C to about 300°C for an effective period of time to provide said mordenite.
Abstract:
A method for preparing a molecular sieving metallosilicate is disclosed which comprises
(A) providing a mixture comprising: water, an oxide of silicon source; a mineralizing agent and/or synthesis directing agent; and a heteropolymetallate of the formula
wherein
A is an ion selected from the group consisting of hydrogen; one or more of the Group I-A to VI-A or Group I-B to VI-B metals; one or more of the rare earth metals; ammonium, alkyl ammonium, alkyl phosphonium or aikyl arsonium; or a mixture of two or more thereof; M isZn, Ga, Ge, Ti, Cr, Mn, Fe, Co, B, Ni, Rh, Zr or a mixture of two or more thereof;
L is P, As, Si, Al, H or a mixture of two or more thereof; J is Mo, W, V, Nb or a mixture of two or more thereof; a is a number which when multiplied by the charge of A will result in balancing the charge on the complex within the brackets; I is a number ranging from zero to about 20; m is a number ranging from zero to about 20; z is a number ranging from about 1 to about 50; y is a number ranging from about 7 to about 150: d is a number ranging from about zero to about 150; and
(B) maintaining said mixture at a temperature of about 80°C to about 300°C for an effective period of to form said molecular sieving metallosilicate.
Abstract:
A molecular sieving metallosilicate is disclosed which comprises a complex represented in terms of mole ratios of oxides by the formula:
wherein A is an ammonium, alkyl ammonium, alkyl phosphonium or alkyl arsonium ion; D is an alkali or alkaline earth metal ion or a mixture of two or more thereof; E is selected from the group consisting of A1, B, Mo, W, Fe, or a mixture of two or more thereof; M is a tetravalent metal selected from the Lanthanide or Actinide series; a is a number ranging from zero to about 25; b is a number ranging from zero to about 1.5; c is a number ranging from zero to about 0.3; d is a number ranging from about 20 to about 500; e is a number ranging from zero to about 200. The X-ray diffraction pattern for these metallosilicates indicates a ZSM-5 like crystalline structure. A method for making these metallosilicates, and a method for dehydrating and reforming methanol using these metallosilicates are disclosed.