摘要:
A catalystic composition suitable for producing acrylonitrile from propylene, ammonia and oxygen (or oxygen-containing gas), which composition is represented by the following formula:(Mo).sub.a (W).sub.b (Bi).sub.c (Pb).sub.d (B).sub.e (Sb).sub.f (X).sub.g (O).sub.h(where: X is chromium or iron; a, b, c, d, e, f, g and h denote respectively number of atoms for molybdenum, tungsten, bismuth, lead, boron, antimony, X and oxygen, and wherein, if it is given that a+b=12, 0.ltoreq.b.ltoreq.7, 0.4.ltoreq.c.ltoreq.7, 2.ltoreq.d.ltoreq.12, 0.2/22.ltoreq.e/a.ltoreq.40/22, 0.ltoreq.f/a.ltoreq.25/22, and 0.ltoreq.g/a.ltoreq.3/22; and h denotes the number of oxygen necessary for satisfying the atomic valence for the individual constituent elements other than oxygen).
摘要翻译:适用于由丙烯,氨和氧(或含氧气体)生产丙烯腈的催化剂组合物,该组成由下式表示:(Mo)a(W)b(Bi)c(Pb)d(B)e (Sb)f(X)g(O)h(其中:X是铬或铁; a,b,c,d,e,f,g和h分别表示钼,钨,铋,铅的原子数, 硼,锑,X和氧,并且其中,如果给定a + b = 12,0,b = 7,0.4,c = 7,2, 12,0.2 / 22 = e / a = 40/22,0 / f / a = 25/22,0 g / a = 3/22; h表示 满足除氧以外的各个构成要素的原子价所必需的氧的数量)。
摘要:
There is disclosed a catalytic composition represented by the formula:(Mo).sub.a (W).sub.b (Bi).sub.c (Pb).sub.d (Sb).sub.e (A).sub.f (B).sub.g (C).sub.h (P).sub.m (O).sub.nin which A is iron and/or chromium, B is cerium and/or magnesium and C is potassium and/or lithium; and a, b, c, d, e, f, g, h, m and n stand for the numbers of atoms for molybdenum, tungsten, bismuth, lead, antimony, A, B, C, phosphorus and oxygen elements respectively, wherein, given that a+b=12,0.ltoreq.b.ltoreq.7, 0.4.ltoreq.c.ltoreq.7, 2.ltoreq.d.ltoreq.12,0.1/22.ltoreq.e/a.ltoreq.25/22, 0.05/22.ltoreq.f/a.ltoreq.3/22,0.ltoreq.g/a.ltoreq.2/22, 0.ltoreq.h/a.ltoreq.3/22,0.ltoreq.m/a.ltoreq.7/22, andn is the numbers of oxygen necessary to satisfy the valences of atoms for the individual constituent elements other than oxygen.
摘要翻译:公开了由式(Mo)a(W)b(Bi)c(Pb)d(Sb)e(A)f(B)g(C)h(P)m(O)表示的催化剂组合物, n,其中A是铁和/或铬,B是铈和/或镁,C是钾和/或锂; 和a,b,c,d,e,f,g,h,m和n分别代表钼,钨,铋,铅,锑,A,B,C,磷和氧元素的原子数,其中 ,给定a + b = 12,0,b = 7,0.4,c = 7,0,...,12 / = 25 / 22,0.05 / 22 f / a = 3/22,0 g / a = 2/22,0 h / a = 3/22,0 = m / a = 7/22,n是满足氧以外的各个构成元素的原子价数所需的氧数。
摘要:
A process for producing a crystalline oxide of vanadium-phosphorus system, which comprises hydrothermally treating an aqueous medium containing (1) a tetravalent vanadium compound, (2) a pentavalent phosphorus compound, (3) a coordinate compound having at least two ligand atoms selected from the group consisting of oxygen atoms and nitrogen atoms and (4) a compound of at least one metal element selected from the group consisting of iron, nickel, cobalt and chromium, to form a crystalline oxide of vanadium-phosphorus system having an X-ray diffraction pattern shown in Table A: TABLE A ______________________________________ X-ray diffraction peaks (Anticathode: Cu--K.alpha.) 2.theta. (.+-.0.2.degree.) ______________________________________ 15.6.degree. 19.7.degree. 24.3.degree. 27.2.degree. 28.8.degree. 30.5.degree. 33.8.degree. ______________________________________
摘要:
Disclosed herein is a process for producing a nitrile which comprises subjecting an alkane to a gas-phase catalytic oxidation reaction with ammonia in the presence of a complex oxide solid catalyst composed of molybdenum, vanadium, tellurium and niobium.According to the process of the present invention, it is possible to produce the objective nitrile at a high selectivity without using a halide, water, etc., moreover, at a relatively low temperature of about 350.degree. to 480.degree. C., particularly about 400.degree. to 450.degree. C.
摘要:
There is disclosed a catalytic composition represented by the formula:(Mo).sub.a (W).sub.b (Bi).sub.c (Pb).sub.d (Sb).sub.e (K).sub.f (P).sub.g (O).sub.hin which a, b, c, d, e, f, g and h stand for the numbers of atoms for molybdenum, tungsten, bismuth, lead, antimony, potassium, phosphorus and oxygen elements respectively, wherein, given that a+b=12,0.ltoreq.b.ltoreq.70.4.ltoreq.c.ltoreq.72.ltoreq.d.ltoreq.120.005.ltoreq.e/a.ltoreq.1.140.ltoreq.f/a.ltoreq.0.1360.ltoreq.g/a.ltoreq.0.54, andh is one-half the sum of the products of the valences and the numbers of atoms for the individual constituent elements other than oxygen.
摘要翻译:公开了由式(Mo)a(W)b(Bi)c(Pb)d(Sb)e(K)f(P)g(O)h表示的催化剂组合物,其中a,b,c ,d,e,f,g和h分别表示钼,钨,铋,铅,锑,钾,磷和氧元素的原子数,其中,a + b = 12,0 = 7 0.4 = c = 7 2 = d = 12 0.005 = e / a = 1。
摘要:
A process for producing a vanadium-phosphorus oxide-containing catalyst precursor, which comprises (a) introducing into an organic solvent a vanadium alkoxide as a pentavalent vanadium compound and a phosphorus compound in the presence of a reducing agent capable of reducing the pentavalent vanadium compound to a tetravalent state, (b) hydrolyzing at least a part of the vanadium alkoxide before or after the introduction of the phosphorus compound, and (c) heating the vanadium-containing liquid medium obtained in step (b), in the presence of the phosphorus compound to reduce at least a part of vanadium to a tetravalent state.
摘要:
A process for producing a crystalline oxide of vanadium-phosphorus system, which comprises hydrothermally treating an aqueous medium containing (1) a tetravalent vanadium compound, (2) a pentavalent phosphorus compound, (3) a coordinate compound having at least two ligand atoms selected from the group consisting of oxygen atoms and nitrogen atoms and (4) a compound of at least one metal element selected from the group consisting of iron, nickel, cobalt and chromium, to form a crystalline oxide of vanadium-phosphorus system having an X-ray diffraction pattern shown in Table A: TABLE A ______________________________________ X-ray diffraction peaks (Anticathode: Cu-K.alpha.) 2.theta. (.+-. 0.2.degree.) ______________________________________ 15.6.degree. 19.7.degree. 24.3.degree. 27.2.degree. 28.8.degree. 30.5.degree. 33.8.degree. ______________________________________
摘要:
A method for producing a polyoxyalkylene glycol by ring opening polymerization of a cyclic ether, wherein a zeolite (other than ZSM-5, ZSM-11 and Nu-5) is used as a catalyst.
摘要:
A process for producing a vanadium-phosphorus oxide-containing catalyst precursor, which comprises (a) introducing into an organic solvent a vanadium alkoxide as a pentavalent vanadium compound and a phosphorus compound in the presence of a reducing agent capable of reducing the pentavalent vanadium compound to a tetravalent state, (b) hydrolyzing at least a part of the vanadium alkoxide before or after the introduction of the phosphorus compound, and (c) heating the vanadium-containing liquid medium obtained in step (b), in the presence of the phosphorus compound to reduce at least a part of vanadium to a tetravalent state.