公开(公告)号：GB1126848A

公开(公告)日：1968-09-11

申请号：GB2132867

申请日：1967-05-08

Applicant: BAYER AG

Inventor： KROENIG WALTER ,  MAYRHOFER WILHELM ,  SCHARFE GERHARD ,  SCHWERDTEL WULF ,  HALCOUR KURT

IPC: B01J23/58 ,  B01J27/13 ,  C07C5/05 ,  C07C7/163

Abstract: 1,126,848. Selectively hydrogenating C 4 hydrocarbons. FARBENFABRIKEN BAYER A.G. 8 May, 1967 [15 June, 1966], No. 21328/67. Heading C5E. C 4 -hydrocarbon mixtures containing butadiene and n-but-1-ene are selectively hydrogenated to obtain butadiene-poor C 4 fractions with high n-but-2-ene content and diminished n-but-1-ene content by passing the liquid C 4 charge in a descending stream over a catalyst fixedly arranged in the reaction zone in a hydrogen atmosphere at an inlet temperature of 10-35‹C. and an outlet temperature of 60-90‹ C. The butadiene content may be reduced to less than 0À1% by volume and butane is formed only in small quantities. A group VIII metal, e.g. Pd, may be used in a catalyst in amount 0À01-1% by wt. of the catalyst. The catalyst support may contain 20% of lithium aluminium spinel and have a specific surface of 10-100 m 2 /g. A hydrogen pressure of 7 to 20 atmospheres is preferred.

公开(公告)号：GB1117595A

公开(公告)日：1968-06-19

申请号：GB3043265

申请日：1965-07-16

Applicant: BAYER AG

Inventor： KROENIG WALTER ,  FRENZ BRUNO

IPC: B01J21/00 ,  B01J23/00 ,  B01J23/40 ,  B01J23/44 ,  B01J23/58 ,  B01J32/00 ,  C07C67/055

Abstract: Organic acetates are prepared by reacting an olefine or alkyl benzene with oxygen and acetic acid in the presence of a palladium metal catalyst supported upon aluminium spinel which may contain aluminium oxide. Ethylene, propylene and iso-butylene, and toluene and xylene are mentioned and the support may be impregnated with palladium salt followed by reduction with hydrazine hydrate or hydrogen at high temperatures. Alkali or alkaline earth metal acetates, e.g. sodium, potassium, magnesium or calcium, may also be present. The spinel support is prepared from metals such as lithium, beryllium, magnesium, zinc, and bivalent manganese, iron, cobalt and nickel. Examples describe the preparation of vinyl acetate, allyl acetate, benzyl acetate and benzal diacetate.ALSO:Palladium metal catalysts deposited on a support consisting partly or completely of aluminium spinel which may contain aluminium oxide, are used in the preparation of organic acetates by reacting an olefine or alkyl benzene at elevated temperature with oxygen and acetic acid. The catalyst support is prepared by adding the spinel-forming metals e.g. lithium, beryllium, magnesium, zinc and in the bivalent form, manganese, iron cobalt and nickel, as salts or hydroxides to the aluminium oxide, drying, converting to oxide at from 250-650 DEG C, and finally heating at 900 to 1200 DEG C to form the spinel. The aluminium oxide may be in piece form, or fine-grained and in a modification metal aluminates may be precipitated from aqueous aluminium salt solutions by adding salts of spinel forming metals and heat treating the product. In a further method the aluminium oxide or hydroxide is mixed with spinel-forming metal oxides or hydroxides, ground, shaped and heated to form the spinels. The palladium is deposited e.g. 0.1 to 10.1 by weight by impregnation with a salt solution followed by reduction with hydrozine hydrate, or hydrogen. Alkali or alkaline earth metal acetates e.g. potassium, sodium magnesium or calcium may also be included and the process may use fixed or moving bed catalyses.

公开(公告)号：GB1072399A

公开(公告)日：1967-06-14

申请号：GB4980963

申请日：1963-12-17

Applicant: BAYER AG

Inventor： KROENIG WALTER ,  FRENZ BRUNO ,  SCHWERDTEL WULF ,  GROLIG JOHANN

IPC: C07C51/23 ,  C07C51/245 ,  C07C53/08 ,  C07C67/04 ,  C07C67/08 ,  C07C69/12 ,  C07C69/14

Abstract: Acetic acid is produced by a process in which, in a first stage, one or more n-butenes are converted by means of acetic acid into secondary butyl acetate in the presence of an acid catalyst, and, in a second stage, the secondary butyl acetate is subjected to an oxidation reaction with oxygen to form acetic acid, part of the acetic acid produced resulting from the oxidation of the secondary butyl radical. The oxidation is preferably carried out at 150 DEG to 250 DEG C. under a pressure of 30 to 100 atmospheres, and preferably the heat of reaction generated during the oxidation reaction is taken up by the reaction product which is recycled to the oxidation reactor over a cooling system.

公开(公告)号：BE576570A

公开(公告)日：1959-09-11

申请号：BE576570

申请日：1959-03-11

Applicant: BAYER AG

Inventor： KROENIG WALTER ,  MECKELBURG ARNO

IPC: C02C