Catalyst active in the oxidation of acrolein into acrylic acid, which comprises a silica or alumina support and from 15 to 80% by weight, with respect to the catalyst, of a catalytically active part having the following chemical composition MoaVbWcCudXxOy wherein X is Cr, Mn, Fe, Co, Ni, Zn, Cd, Al
Catalyst active in the oxidation of acrolein into acrylic acid, which comprises a silica or alumina support and from 15 to 80% by weight, with respect to the catalyst, of a catalytically active part having the following chemical composition MoaVbWcCudXxOy wherein X is Cr, Mn, Fe, Co, Ni, Zn, Cd, Al or Sb and wherein for a=12, b ranges from 4 to 8, c ranges from 1 to 4, d ranges from 2 to 5, x ranges from 0 to 1 and y ranges from about 17 to about 72; said active part having an amorphous and bidimensional structure with an interplanar distance of 3.98 A and an IR spectrum with a broad band at 860 cm-1. The catalyst is obtained by impregnation of the support with an aqueous solution of decomposable salts of the metals of said active part, drying and activation in an oxidizing atmosphere and then in an inert atmosphere, the cycle of impregnation, drying and activation being then repeated at least one time and the activation of the last cycle being followed by a thermal treatment in an oxidizing atmosphere.
대표청구항▼
A catalyst active in the oxidation of acrolein into acrylic acid, which comprises a silica or alumina support and from 15 to 80% by weight, with respect to the catalyst, of a catalytically active part having the following chemical composition MoaVbWcCudXxOy wherein X is Cr, Mn, Fe, Co, Ni, Zn, Cd, A
A catalyst active in the oxidation of acrolein into acrylic acid, which comprises a silica or alumina support and from 15 to 80% by weight, with respect to the catalyst, of a catalytically active part having the following chemical composition MoaVbWcCudXxOy wherein X is Cr, Mn, Fe, Co, Ni, Zn, Cd, Al or Sb and wherein for a=12, b ranges from 4 to 8, c ranges from 1 to 4, d ranges from 2 to 5, x ranges from 0 to 1 and y ranges from about 17 to about 72; said active part having an amorphous and bidimensional structure with an interplanar distance of 3.98 A, as measured by X rays; and an IR spectrum with a somewhat broad band at 860 cm-1 attributable to the tetrahedral coordination of the oxygen atoms with respect to the metal atoms; and said catalyst being obtained by impregnating the support with an aqueous solution of decomposable salts of the metals of said active part, drying the thus impregnated support and activating at high temperature the support thus dried, the activation stage being carried out firstly in an oxidizing atmosphere and then in an inert atmosphere, the cycle of impregnation, drying and activation being then repeated at least one time and the activation of the last cycle being followed by a thermal treatment in an oxidizing atmosphere.
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이 특허에 인용된 특허 (4)
Childress David L. (Angleton TX) Hayes William V. (Clute TX) Poppe Richard L. (Clute TX), Acrolein oxidation catalyst.
Mamedov,Edouard A.; Shaikh,Shahid N.; Araujo,Armando, Catalyst composition without antimony or molybdenum for ammoxidation of alkanes, a process of making and a process of using thereof.
Kawajiri Tatsuya (Himeji JPX) Uchida Shinichi (Himeji JPX) Wada Masahiro (Nishinomiya JPX), Catalyst for oxidation of acrolein and process for preparation thereof.
Sugi Hideki,JPX ; Sakai Fumio,JPX ; Wada Koichi,JPX ; Shiraishi Kazuo,JPX ; Kojima Toshitake,JPX ; Umejima Atsushi,JPX ; Seo Yoshimasa,JPX, Catalysts and process for the preparation thereof.
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Dieterle, Martin; Hibst, Hartmut; Poepel, Wolfgang Juergen; Petzoldt, Jochen; Mueller Engel, Klaus Joachim, Preparation of catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu.
Dieterle, Martin; Hibst, Hartmut; Popel, Wolfgang Juergen; Petzoldt, Jochen; Mueller-Engel, Klaus Joachim, Preparation of catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu.
Gnanadesikan, Vijay; Singh, Ramnik; Dasari, Rajesh; Alger, Montgomery, Process for manufacturing acrylic acid, acrylonitrile and 1,4-butanediol from 1,3-propanediol.
Khalid Karim GB; Yajnavalkya Subrai Bhat SA; Syed Irshad Zaheer SA; Asad Ahmad Khan SA, Process for the oxidation of unsaturated aldehydes to produce carboxylic acids using Mo-V based catalysts.
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