Abstract:
Disclosed is a process for making acetic acid which comprises oxidizing ethane with molecular oxygen in a reaction zone at a pressure of at least 100 psig while the reactants are in contact with a solid catalyst having the elements and relative atomic proportions indicated by the empirical formula:
VP a M b O x
where M is one or more optional element selected from Co, Cu, Re, Fe, Ni, Nb, Cr, W, U, Ta, Ti, Zr, Zn, Hf, Mn, Pt, Pd, Sn, Sb, Bi, Ce, As, Ag, and Au, wherein a is 0.5 to 3, b is 0 to 1, and x is a number determined by the valence requirements of the other elements in the catalyst, and wherein said catalyst contains crystalline vanadyl pyrophosphate.
Abstract:
A method for preparing a molecular sieving metallosilicate which comprises: (A) providing an aqueous dispersion of colloidal particles comprising contiguous mixtures of silica and the oxide of a transition metal selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co. Ni, Zn, Zr, Y or a mixture of two or more of said metals; (B) mixing an effective amount of a mineralizing agent and/or synthesis directing agent with said dispersion to form a gel; and (C) maintaining said gel at a temperature of 80°C to 300°C for an effective period of time to provide said metallosilicate.
Abstract:
A method for preparing a molecular sieving metallosilicate which comprises:
(A) providing an aqueous dispersion of colloidal particles comprising contiguous mixtures of silica and the oxide of a transition metal selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co. Ni, Zn, Zr, Y or a mixture of two or more of said metals; (B) mixing an effective amount of a mineralizing agent and/or synthesis directing agent with said dispersion to form a gel; and (C) maintaining said gel at a temperature of 80°C to 300°C for an effective period of time to provide said metallosilicate.
Abstract:
A process for the preparation of a fluid bed vinyl acetate (VAM) catalyst comprising impregnating a support comprising a mixture of substantially inert microspheroidal particles with a solution comprising a halide-free metal salt of Pd and M, wherein M comprises Ba, Au, La, Nb, Ce, Zn, Pb, Ca, Sr, Sb or mixtures thereof, reducing the metal salts to form a deposit of Pd and M on the support surface and impregnating the support with at least one halide-free alkali metal salt. At least 50% of the particles used for the microspheroidal support have a particle size below 100 microns, preferably below 60 microns.
Abstract:
A method of preparing a V a Sb b M m N n O x catalyst useful in the ammoxidation of a C 2 -C 5 hydrocarbon to its corresponding α, β unsaturated nitrile comprising heating an aqueous mixture comprising V 2 O 5 and Sb 2 O 3 at a temperature above about 100° to 250°C, preferably 110° to 175°C, most preferably 120° to 160°C, under autogenous pressure with agitation to form a catalyst precursor, drying the catalyst precursor and calcining the catalyst precursor to form the finished catalyst.
Abstract:
A method of preparing a V a Sb b M m N n O x catalyst useful in the ammoxidation of a C 2 -C 5 hydrocarbon to its corresponding α, β unsaturated nitrile comprising heating an aqueous mixture comprising V 2 O 5 and Sb 2 O 3 at a temperature above about 100° to 250°C, preferably 110° to 175°C, most preferably 120° to 160°C, under autogenous pressure with agitation to form a catalyst precursor, drying the catalyst precursor and calcining the catalyst precursor to form the finished catalyst.
Abstract translation:一种制备可用于将C2-C5烃氨氧化成其相应的α,β不饱和腈的VaSbbMmNnOx催化剂的方法,包括在高于约100℃至250℃,优选110℃至大约110℃的温度加热包含V 2 O 5和Sb 2 O 3的含水混合物, 175℃,最优选120℃至160℃,在自生压力下搅拌以形成催化剂前体,干燥催化剂前体并煅烧催化剂前体以形成最终催化剂。
Abstract:
Disclosed is a process for making acetic acid which comprises oxidizing ethane with molecular oxygen in a reaction zone at a pressure of at least 100 psig while the reactants are in contact with a solid catalyst having the elements and relative atomic proportions indicated by the empirical formula: VP a M b O x where M is one or more optional element selected from Co, Cu, Re, Fe, Ni, Nb, Cr, W, U, Ta, Ti, Zr, Zn, Hf, Mn, Pt, Pd, Sn, Sb, Bi, Ce, As, Ag, and Au, wherein a is 0.5 to 3, b is 0 to 1, and x is a number determined by the valence requirements of the other elements in the catalyst, and wherein said catalyst contains crystalline vanadyl pyrophosphate.