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    • 3. 发明授权
    • Process for producing methacrolein
    • 生产异丁烯醛的方法
    • US4446328A
    • 1984-05-01
    • US263667
    • 1981-05-14
    • Atsushi AoshimaRyoichi Mitsui
    • Atsushi AoshimaRyoichi Mitsui
    • B01J23/88C07C45/35C07C45/37C07C51/23C07C45/32
    • B01J23/8871B01J23/8874B01J23/8875C07C45/35C07C45/37C07C51/23B01J2523/00
    • A process for producing methacrolein by oxidizing isobutylene or tertiary butanol with molecular oxygen, characterized by contacting a gaseous mixture of isobutylene or tertiary butanol, air or oxygen and optionally steam and an inert gas with a catalyst having the general composition:Mo.sub.12 Fe.sub.a Ni.sub.b Te.sub.c X.sub.d Z.sub.f Y.sub.g O.sub.hwherein a, b, c, d, f and g represent the numbers of atoms of the respective elements per 12 molybdenum atoms; X is Tl, Rb or Cs; Z is In or Ti; Y represents at least one element selected from the group consisting of Cu, Nd, Sm and Pb; a is a value of 0.2-6; b is a value of 0.2-6; a+b is a value of 1-10; c is a value of 0.1-4; d is a value of 0.1-3; f is a value of 0.1-3; g is a value of 0-5; and h is the number of oxygen atoms for satisfying the valencies of the existing elements. The use of this catalyst enables the selectivity for methacrolein to be improved to 90 or more and the yield based on the starting material to be increased to 89-91%. In addition, the high activity of said catalyst and high selectivity are stably maintained for a long period of time.
    • 通过用分子氧氧化异丁烯或叔丁醇来生产异丁烯醛的方法,其特征在于使异丁烯或叔丁醇,空气或氧气的气体混合物和任选的蒸汽和惰性气体与具有一般组成的催化剂接触:其中a,b ,c,d,f和g表示每12个钼原子的各元素的原子数; X是Tl,Rb或Cs; Z是In或Ti; Y表示选自Cu,Nd,Sm和Pb中的至少一种元素; a是0.2-6的值; b为0.2-6的值; a + b为1-10; c为0.1-4的值; d为0.1-3的值; f为0.1-3的值; g是0-5的值; 并且h是满足现有元素的价态的氧原子数。 使用该催化剂使甲基丙烯醛的选择性提高到90以上,原料的收率提高到89〜91%。 此外,所述催化剂的高活性和高选择性长时间稳定地保持。
    • 4. 发明授权
    • Method for preparing methacrolein
    • 甲基丙烯醛的制备方法
    • US4354044A
    • 1982-10-12
    • US265136
    • 1981-05-20
    • Atsushi AoshimaRyoichi MitsuiHitoshi Nihei
    • Atsushi AoshimaRyoichi MitsuiHitoshi Nihei
    • C07C47/22B01J23/00B01J23/88C07C45/00C07C45/35C07C45/37C07C45/38C07C51/23C07C67/00C07C45/32C07C45/29
    • B01J23/8871B01J23/8874B01J23/8875C07C45/35C07C45/37C07C51/23B01J2523/00
    • A method for preparing methacrolein by oxidizing isobutylene or tertiary butanol with molecular oxygen, characterized by contacting a gaseous mixture of isobutylene or tertiary butanol, air or oxygen and optionally steam and an inert gas with a catalyst having the general combination:Mo.sub.12 Fe.sub.a Ni.sub.b Te.sub.c Tl.sub.d Pb.sub.f X.sub.g O.sub.hwherein a, b, c, d, f and g represent the numbers of atoms of the respective elements per 12 molybdenum atoms; X is at least one element selected from the group consisting of Cu, Nd and Sm; a is a value of 0.2-6; b is a value of 0.2-6; a+b is a value of 1-10; c is a value of 0.1-4; d is a value of 0.1-3; f is a value of 0.1-5; g is a value of 0.1-5; and h is the number of oxygen atoms for satisfying the valencies of the existing elements. The use of this catalyst enables the selectivity for methacrolein to be improved to 90-94% and the yield based on the starting material to be increased to 89-91%. In addition, the activity of said catalyst is stably maintained for a long period of time.
    • 通过用分子氧氧化异丁烯或叔丁醇来制备甲基丙烯醛的方法,其特征在于将异丁烯或叔丁醇,空气或氧气的气体混合物和任选的蒸汽和惰性气体与具有以下通用组合的催化剂接触:其中a,b ,c,d,f和g表示每12个钼原子的各元素的原子数; X是选自Cu,Nd和Sm中的至少一种元素; a是0.2-6的值; b为0.2-6的值; a + b为1-10; c为0.1-4的值; d为0.1-3的值; f为0.1-5的值; g值为0.1-5; 并且h是满足现有元素的价态的氧原子数。 使用该催化剂使得甲基丙烯醛的选择性提高到90-94%,并且基于原料的产率将提高到89-91%。 此外,所述催化剂的活性稳定地保持长时间。
    • 5. 发明授权
    • Process for producing methacrolein
    • 生产异丁烯醛的方法
    • US4258217A
    • 1981-03-24
    • US83878
    • 1979-10-11
    • Atsushi AoshimaRyoichi MitsuiTatsuo Yamaguchi
    • Atsushi AoshimaRyoichi MitsuiTatsuo Yamaguchi
    • B01J23/887C07C45/37C07C45/30C07C45/39
    • B01J23/8876C07C45/37B01J2523/00
    • A process for producing methacrolein by oxidation of isobutylene or tert-butanol with molecular oxygen in the presence of a catalyst having the following composition:ti Mo.sub.12 Bi.sub.a Fe.sub.b Ni.sub.c Pb.sub.d X.sub.f O.sub.g orMo.sub.12 Bi.sub.a Fe.sub.b Ni.sub.c Pb.sub.d Sm.sub.e X.sub.f O.sub.gwherein X represents at least one element selected from the group consisting of Rb, Cs and Tl; and when X represents at least two of the elements f is the sum of the elements; a is a value of 0.1 to 10; b is a value of 0.05 to 2; c is a value of 0.05 to 2; d is a value of 0.05 to 5; e is a value of 0.05 to 5; f is a value of 0.01 to 2; and g is the number of oxygen atoms satisfying the valencies of the elements. Said catalyst enables methacrolein to be produced in high yield and can prevent the formation of methacrylic acid.
    • 在具有以下组成的催化剂存在下,通过用分子氧氧化异丁烯或叔丁醇来制备异丁烯醛的方法:其中X表示选自Rb,Cs和T1中的至少一种元素;其中X表示选自Rb,Cs和Tl中的至少一种元素。 并且当X表示元素中的至少两个元素时,元素的总和; a为0.1〜10的值; b为0.05〜2的值; c为0.05〜2的值; d为0.05〜5的值; e为0.05〜5的值; f为0.01〜2的值; g是满足元素价态的氧原子数。 所述催化剂能够以高产率生产异丁烯醛,并且可以防止形成甲基丙烯酸。