摘要:
A catalyst having the atomic ratios set forth in the empirical formula below: A.sub.a B.sub.b C.sub.c Ge.sub.d Bi.sub.e Mo.sub..sub.12 O.sub.x where A=two or more of alkali metals, In and Tl B=one or more of Mg, Mn, Ni, Co, Ca, Fe, Ce, Sm, Cr, Sb, and W; preferably B equals the combination of Fe and at least one element selected from the group consisting of Ni and Co and at least one element selected from the group consisting of Mg, Mn, Ca, Ce, Sn, Cr, Sb, and W C=one or more of Pb, Eu, B, Sn, Te and Cu a=0.05 to 5.0 b=5 to 12 c=0 to 5.0 d=0.1 to 2.0 e=0.1 to 2.0 x=the number of oxygen atoms required to satisfy the valency requirements of the other elements and b>a+c.
摘要翻译:具有以下经验式所示的原子比的催化剂:AaBbCcGedBieMo12Ox其中A =两种或更多种碱金属,In和Tl B = Mg,Mn,Ni,Co,Ca,Fe,Ce,Sm,Cr中的一种或多种 ,Sb和W; 优选B等于Fe和选自Ni和Co中的至少一种元素和从由Mg,Mn,Ca,Ce,Sn,Cr,Sb和WC = 1组成的组中的至少一种元素的组合。 以上的Pb,Eu,B,Sn,Te和Cu a = 0.05〜5.0 b = 5〜12 c = 0〜5.0 d = 0.1〜2.0 e = 0.1〜2.0 x =满足 其他元素的价格要求和b> a + c。
摘要:
A catalyst composition comprising a complex of catalytic oxides of iron, bismuth, molybdenum and calcium and characterized by the following empirical formula: A.sub.a B.sub.b C.sub.c D.sub.d Fe.sub.e Bi.sub.f MO.sub.12 O.sub.x where A=one or more of Li, Na, K, Rb and Cs or mixtures thereof B=one or more of Mg, Mn, Ni, Co, Ag, Pb, Re, Cd and Zn or mixtures thereof C=one or more of Ce, Cr, Al, Sb, P, Ge, La, Sn, V and W or mixtures thereofD=one or more of Ca, Sr, Ba or mixtures thereof and a=0.01 to 1.0; b and e=1.0-10; c, d, and f=0.1 to 5.0 and x is a number determined by the valence requirements of the other elements present.
摘要:
A catalyst having the atomic ratios set forth in the empirical formula below: A.sub.a B.sub.b C.sub.c Ge.sub.d Bi.sub.e Mo.sub.12 O.sub.x where A=two or more of alkali metals, In and Tl B=one or more of Mg, Mn, Ni, Co, Ca, Fe, Ce, Sm, Cr, Sb, and W; preferably B equals the combination of Fe and at least one element selected from the group consisting of Ni and Co and at least one element selected from the group consisting of Mg, Mn, Ca, Ce, Sn, Cr, Sb, and W C=one or more of Pb, Eu, B, Sn, Te and Cu a=0.05 to 5.0 b=5 to 12 c=0 to 5.0 d=0.1 to 2.0 e=0.1 to 2.0 x=the number of oxygen atoms required to satisfy the valency requirements of the other elements and b>a+c.
摘要翻译:具有以下经验式所示的原子比的催化剂:AaBbCcGedBieMo12Ox其中A =两种或更多种碱金属,In和Tl B = Mg,Mn,Ni,Co,Ca,Fe,Ce,Sm,Cr中的一种或多种 ,Sb和W; 优选B等于Fe和选自Ni和Co中的至少一种元素和从由Mg,Mn,Ca,Ce,Sn,Cr,Sb和WC = 1组成的组中的至少一种元素的组合。 以上的Pb,Eu,B,Sn,Te和Cu a = 0.05〜5.0 b = 5〜12 c = 0〜5.0 d = 0.1〜2.0 e = 0.1〜2.0 x =满足 其他元素的价格要求和b> a + c。
摘要:
A process for regenerating molybdenum containing ammoxidation catalyst comprising replacing the molybdenum loss from the catalyst during the ammoxidation reaction wherein ammonium dimolybdenum is utilized as the source for replacement of the molybdenum loss from the original catalyst.
摘要:
A process for the manufacture of acrylic acid comprising reacting propylene and oxygen (preferably in the form of air) in a reaction zone having a catalyst characterized by the following formula: AaBbCcCadFeeBifMo12Ox where A=one or more of Li, Na, K, Rb and Cs B=one or more of Mg, Sr, Mn, Ni, Co and Zn C=one or more of Ce, Cr, Al, Sb, P, Ge, Sn, Cu, V and W and a=0.01 to 1.0; b and e =1.0-10 c=0 to 5.0, preferably 0.05 to 5.0, especially preferred being 0.05 to 4.0 d and f=0.05 to 5.0, and x is a number determined by the valence requirements of the other elements present; at an elevated temperature to produce acrylic acid and acrolein.
摘要:
A process for the preparation of a promoted VSbOx catalyst comprising mixing a vanadium compound, at least a first portion of an antimony compound, and at least a portion of the support material to form a slurry, heating the slurry to remove the water, calcining the dried slurry to form a catalyst precursor, combining the catalyst precursor with a second aqueous sol containing the remaining portion of the support material and the remaining portion of the antimony compound to form a second slurry, drying the second slurry to remove the water and calcining the dried mixture to form the finished catalyst.
摘要:
A process for preparing a catalyst having the following formula: V.sub.a Sb.sub.b M.sub.c O.sub.x wherein M=tin, titanium, lithium, sodium, potassium, molybdenum, tungsten, iron, chromium, cobalt, copper, gallium, niobium, tantalum, tellurium, bismuth, or mixtures thereof, a=0.1 to 5, preferably 0.1 to 3, most preferably 0.1 to 2 b=0.1 to 5, preferably 0.1 to 3, most preferably 0.1 to 2 c=0.0 to 5, preferably greater than 0 to 5, most preferably 0.01 to 3, and x is a number sufficient to satisfy the valency requirements of the elements, comprising forming an aqueous slurry comprising vanadium and antimony, adding a peptizing agent free of any lithium compounds capable of providing hydroxide ions to said slurry and spray drying said slurry to form an attrition resistant catalyst.
摘要:
A process increasing the yield of both HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a crude ketone and/or a mixture of at least two ketones, ammonia and air, into a reaction zone containing an ammoxidation catalyst, reacting the hydrocarbon, the ketone, ammonia and oxygen over said catalyst at an elevated temperature to produce acrylonitrile, hydrogen cyanide and acetonitrile, and recovering the acrylonitrile, hydrogen cyanide and acetonitrile from the reactor.
摘要:
A process increasing the yield of both HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a crude ketone and/or a mixture of at least two ketones, ammonia and air, into a reaction zone containing an ammoxidation catalyst, reacting the. hydrocarbon, the ketone, ammonia and oxygen over said catalyst at an elevated temperature to produce acrylonitrile, hydrogen cyanide and acetonitrile, and recovering the acrylonitrile, hydrogen cyanide and acetonitrile from the reactor.
摘要:
A catalyst composition comprising a complex of catalytic oxides of iron, bismuth, molybdenum, cobalt, cerium, antimony, at least one of nickel or magnesium, and at least one of lithium, sodium, potassium, rubidium, or thallium, and characterized by the following empirical formula: AaBbCcFedBieCofCegSbhMomOx wherein A is at least one of Cr, P, Sn, Te, B, Ge, Zn, In, Mn, Ca, W, or mixtures thereof B is at least one of Li, Na, K, Rb, Cs, Tl, or mixtures thereof C is least one of Ni, Mg or mixtures thereof a is 0 to 4.0 b is 0.01 to 1.5 c is 1.0 to 10.0 d is 0.1 to 5.0 e is 0.1 to 2.0 f is 0.1 to 10.0 g is 0.1 to 2.0 h is 0.1 to 2.0 m is 12.0 to 18.0 and x is a number determined by the valence requirements of the other elements present. The catalyst is useful in processes for the ammoxidation of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile and mixtures thereof, respectively.