Catalysts for isomerization of cresols

Patent report

A.W.J. Sachtler; J.R. Lawson

Preparation of 4,4°-dichlorobenzophenone from chlorobenzoyl chloride and chlorobenzene

UOP Inc.

M. Furuya; H. Nakajima

Catalysts for isomerization of cresols U.S. 5,053,558, Oct. 1, 1991; Appl. Oct. 17, 1988; Cont.-in-part of U.S. 4,939,110 Non-equilibrium mixtures of cresols are isomerized over catalysts containing Group VIII metals, modifiers, pentasil zeolites and inorganic oxide binders. Using a catalyst containing HZSM-5 zeolite 11, Pt 0.23, and Pb 0.51% in an AI203 binder, m-cresol was isomerized to ortho and para isomers with high selectivity.

p-

Technology Research Association for New Application Development for Light-Weight Fractions Jpn Kokai Tokkyo Koho 91,206,062; 91,206,063, Sept. 9, 1991; Appls. Jan. 5, 1990 4,4'-Dichlorobenzophenone is prepared by condensation of pchlorobenzoyl chloride with PhCI in the presence of crystalline aluminosilicate, particularly H+-type mordenites.

Cracking catalyst

Manufacture of acrylic acid and its esters from o l i g o m e r s

P. He; W. He; X. Shu

T. Fujii; O. Takahashi

China "Petrochemical Corp. Beijing

Idemitsu Petrochemical Co. Ltd.

Chinese 1,052,500, June 26, 1991; Appl. Dec. 13, 1989 A cracking catalyst comprises as the active component: Y-type molecular sieves having Si/AI ratio ~> 5, 5-40, with rare earth metal-exchanged laminar clays (e.g., montmorillonite) 1.5-4.2, and on a support (e.g., silica and alumina) 18-93.5 wt.%. The catalyst has stable activity and resists pollution by heavy metals.

Jpn. Kokai Tokkyo Koho 91,178,949, Aug. 2, 1991; Appl, Sept. 19, 1989 Acrylic acid and alkyl acrylates are prepared by decomposing oligomers H2C:CHCO2(XCO2)nR (R = H, alkyl; X = CH2CH2, CHMe; n = 1-5) in the presence of a solid acidic zeolite catalyst (HZSM-5).

Polymerization of alkoxystyrenes with zeolite catalysts Fluid bed o l i g o m e r i z a t i o n o f olefins for gasoline manufacture M.N. Harandi; H. Owen

Mobil Oil Corp. U.S. 5,043,499, Aug. 27, 1991; Appl. Feb. 15, 1990 The continuous multistage process for converting normally gaseous olefins containing ethylene to gasoline and/or distillate range hydrocarbons has two fluidized olefin oligomerization reaction zones operating in parallel with one reaction zone operating under high severity reaction conditions effective for converting ethylene. The catalyst is a zeolite ZSM-5. The feedstock is a C2-~ cracked olefinic gas from a FCC unit.

Removal of nitrogen oxide from industrial waste gases M. Iwamoto

Iwamoto, Masakazu Jpn Kokai Tokkyo Koho 91,217,218. Sept. 25, 1991; Appl. Jan. 23, 1990 Waste gases containing O and nitrogen oxide are heated at 200500°C in the presence of a Cu zeolite (e.g., Cu/ZSM-5) catalyst and hydrocarbons (e.g., Cl_s-olefins, paraffins, and naphthenes). Olefin dimerization C.A. Drake

Phillips Petroleum Co. U.S. 5,064,794, Nov. 12, 1991; Appl. Nov. 20, 1989 Olefins were dimerized on a catalyst consisting of an alkali-metal hydroxide supported on a type Y zeolite.

Manufacture of 2,6-dialkylanthracenes F. Mizukami; A. Katayama; S. Mitamura et al.

Agency of Industrial Sciences and Technology; Nippon Steel Chemical Co. Ltd; Nippon Steel Corp. Jpn Kokai Tokkyo Koho 91,176,429, July 31, 1991; Appl. Dec. 2, 1989 The title compounds, useful as raw material for liquid-crystal polymers and electric conductive polymers, are manufactured by treating anthracenes with alkylating agents (e.g., isopropylating agents) in the presence of a H mordenite-type zeolite catalyst. C a t a l y s t s for cationic polymerization of styrene and v i n y l ethers D.A. DuBois

D.A. Dubois

Shell Oil Co U.S. 5,073,610, Dec. 17, 1991; Appl. Sept. 29, 1990 Zeolites, e.g., zeolite 5A, are used as polymerization initiators for alkoxystyrenes at room temperature, giving polymers with molecular wt. > 106 and broad molecular wt. distributions.

Zeolite-platinum group metal catalysts for aromatization of C2_4 hydrocarbons F. Raatz; B. Juguin; J.P, Bournonville

Institut Francais du Petrole Eur. Pat. Appl. 457,640, Nov. 21, 1991; FR. Appl. May 11, 1990 The title catalysts contain MFI zeolites, Pt-group metals, and Sn, Ge, Pb, and/or In.

Gallium-containing zeolite catalysts for aromatization o f l i g h t paraffins and conversion of hydrocarbons G.L. Price; V. Kanazirev; K.M Dootey

Louisiana State University PCT Int. Appl. 91,17,133, Nov. 14, 1991; U.S. Appl. May 1, 1990 The title catalysts are formed by preparing an intimate mixture of a gallium-containing species, such as Ga203, with a zeolite having a pore mouth comprising 10 O atoms, such as ZSM-5, preferably followed by treatment with a reducing agent, such as H. C a t a l y t i c d e c o m p o s i t i o n of n i t r o g e n o x i d e s S. Kagawa; Y. Teraoka

Tosoh Corp. Eur. Pat. Appl. 445,816, Sept. 11, 1991; Jpn. Appl. Mar. 9, 1990 NOx is removed from exhaust gases or industrial flue gases by contacting the catalyst comprising a zeolite (e.g., ZSM-5 type) having SIO2/AI203 mol ratio ~> 20:1 and containing Cu in addition to I> 1 of Ca, Sr and Ba.

Preparation of methyl isobutyl ketone P.Y. Chen; S.J. Chu; C.C. Chen et al.

Industrial Technology Research Institute U.S. 5,059,724, Oct. 22, 1991; Appl. Sept. 2. 1988 Acetone was treated with H2 in the presence of a ZSM-5 zeolite catalyst containing Pd and an alkali metal to give MeCOCH2CHMe2.

Preparation of phenols from halobenzenes M. Furuya; H. Nakajima

Shell Oil Co.

Technology Research Association for New Application Development for Light-Weight Fractions

U.S. 5,068,294, Nov. 26, 1991; Appl. Sept. 28, 1990 The title catalysts comprise an I-containing electrophile (e.g., Me3Sil) and a zeolite (zeolite 5A).

Jpn Kokai Tokkyo Koho 91,206,060, Sept. 9, 1991; Appl. Jan. 8, 1990 Phenols are prepared by hydrolysis of halogenated aromatic corn-

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ZEOLITES, 1993, Vol 13, January