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Selective production of olefins
Patent Report
Nitrogen Oxides Removal From Exhaust Gas J. R. Gladden Caterpillar Tractor Co. Belg. 893,278, Sep 16, 1982; PCT Int. Appl. Jun 22, 1981 The emissions of NOx from internal combustion engines were reduced by introducing ~10% NH 3 into the hot exhaust gases and passing them through a thermal or a catalytic reactor containing a H-exchanged zeolite catalyst. N i t r o g e n Oxides Removal From Waste Gas Mitsubishi Chemical Industries Co. Ltd. Jpn. Kokai Tokkyo Koho 82,140,628, Aug 31, 1982; Appl. Feb 23, 1981 Waste gas containing NOx is mixed with NH 3 and contacted with a synthetic zeolite of the RH form at 500°-700°C. Selective Production of Olefins L. D. Rollrnann Mobil Oil Corp. U.K. Pat. Appl. 2,093,721, Sep 8, 1982; U.S. Appl. Feb 2, 1981 Lower alcohols were converted to lower olefins in the presence of a zeolite H-ZSM-5 catalyst and ;~ 1 bulky heterocyclic N-containing compounds with an effective critical dimension of >6.2 A and PKa 3-9.
M e t h y l e n e Chloride I.C.l. PLC U.K. Pat. Appl. 2,095,243, Sep 29, 1982; AppI. Mar 19, 1981 Methylene chloride was prepared by treating methane with chlorine in the vapour phase in the presence of a metal exchanged zeolite catalyst containing Ag and Mn. C h l o r i n a t i o n o f A l k y l Chlorides D. R. Pyke; R. Reid I.C.I. PLC U.K. Pat. Appl. 2,095,244, Sep 29, 1982; Appl. Mar 19, 1981 Chloroalkanes, for example CH2CIv were prepared by treating an alkyl chloride, for example CH3CI with chlorine in the vapour phase in the presence of a zeolite catalyst containing Ag and Mn. C a t a l y t i c Cracking for Improved Octane Gasoline J. w. Scott Chevron Research Co. U.S. 4,359,378, Nov 16, 1982; Appl. Apr 16, 1979 Cracking-reforming catalysts containing Pt-exchanged H-ZSM and rare earth-exchanged Y zeolites give higher conversions and higher gasoline yields with higher octane numbers than conventional cracking catalysts. Para-selective Zeolite Catalysts Treated w i t h Sulphur
C h l o r i n a t i o n o f Alkanes D. R. Pyke; R. Reid I.C.I. PLC U.K. Pat. Appl. 2,095,245, Sep 29, 1982; Appl. Mar 19, 1981
Compounds
Selective chlorination of C ;~ 2 alkanes, especially the chlorination of C2H 6 for the synthesis of CH2:CHCI , can be accomplished by contacting an alkane, chlorine, and optionally an oxygen source in the vapour phase in the presence of e zeolite exchanged with Ag and/or Mn cations.
Aromatic compounds are converted to dialkyl benzenes highly enriched in the para-dialkylbenzene isomer by contact with a zeolite ZSM catalyst modified by treatment with hydrogen sulphide or sulphur dioxide.
Converting Ethane to A r o m a t i c s A. W. Chester; Y. F. Chu Mobil Oil Corp. U.S. 4,350,835, Sep 21, 1982; Appl. Feb 19, 1981 Aromatic hydrocarbons are prepared by passing ethane without added air or oxygen over a zeolite H-ZSM-5 catalyst containing small amounts of gallium.
w. w. Kaeding Mobil Oil Corp. U.S. 4,365,104, Dec 21, 1982; Appl. Jun 26, 1981
Para-selective Z e o l i t e Catalysts w. w. Kaeding Mobile Oil Corp. U.S. 4,361,713, Nov 30, 1982; Appl. Jun 26, 1981 ZSM zeolites modified by treatment with a halogen compound such as HCI, HBr, CI, Br, CCI 4 and GeCI 4 were used as catalysts for the alkylation, transelkylation or disproportionation of aromatic compounds to give dialkylbenzenes with high concentrations of the para isomer.
Extending Refining Catalyst Life L. B. Young Mobil Oil Corp. U.S. 4,356,338, Oct 26, 1982; Appl. Jul 27, 1979 Aging and coking rates of zeolite petroleum refining catalysts containing H-ZSM-5 zeolite are retarded by a pretreatment procedure involving contact with steam and/or impregnation with (NH4)2HPO 4 to yield catalysts containing 3.2-4.3 wt.%P.
Conversion o f Xylenes Containing Ethylbenzene Toray Industries Inc. Jpn. Kokai Tokkyo Koho 82,134,423, Aug 19, 1982; Appl. Feb 12, 1981 The title conversion was done in the presence of H and catalysts containing ion-exchanged mordenite-type zeolite, P and Mo, W and/or V.
Cracking Catalyst R. L. Chiang W. R. Grace and Co. Belg. 893,698, Oct 18, 1982; U.S. AppI. Jun 30, 1981
Hydrocracking of Heavy Petroleum Oils Jushitsuyu Taisaku Gijutsu Kenkyu Kumiai Jpn. Kokai Tokkyo Koho 82,141,492, Sep 1, 1982; Appl. Feb 26, 1981
Zeolite-based cracking catalysts were prepared by first exchanging Na-Y type zeolites with AI and NH 4 and then introducing rare earth metals.
The catalyst used is a super stabilized Y-type zeolite impregnated with ;=1 of Groups IV and V I I I metals.
Selective Production of Olefins L D. Rollmann Mobil Oil Corp. U.S. 4,359,595, Nov 16, 1982; Appl. Apr 28, 1980. Cont-in-part of U.S. 4,300,011
SEPARATION PROCESSES
Conversion of lower alcohols and/or ethers to lower olefins in the presence of zeolite H-ZSM-5 catalysts was improved by contacting the catalyst with bulky heterocyclic N-compounds to suppress the formation of mononuclear aromatics.
Separating Glucose f r o m Fructose R. W. Neuzil; J. W. Priegnitz UOP Inc. U.S. 4,349,668, Sep 14, 1982; AppI. May 27, 1976 Glucose was separated by selective adsorption from a glucosefructose mixture by contacting the mixture with an X-type zeolite containing potassium ions.
Z E O L I T E S , 1983, Vol 3, July
275
Nitrogen Oxides Removal From Exhaust Gas J. R. Gladden Caterpillar Tractor Co. Belg. 893,278, Sep 16, 1982; PCT Int. Appl. Jun 22, 1981 The emissions of NOx from internal combustion engines were reduced by introducing ~10% NH 3 into the hot exhaust gases and passing them through a thermal or a catalytic reactor containing a H-exchanged zeolite catalyst. N i t r o g e n Oxides Removal From Waste Gas Mitsubishi Chemical Industries Co. Ltd. Jpn. Kokai Tokkyo Koho 82,140,628, Aug 31, 1982; Appl. Feb 23, 1981 Waste gas containing NOx is mixed with NH 3 and contacted with a synthetic zeolite of the RH form at 500°-700°C. Selective Production of Olefins L. D. Rollrnann Mobil Oil Corp. U.K. Pat. Appl. 2,093,721, Sep 8, 1982; U.S. Appl. Feb 2, 1981 Lower alcohols were converted to lower olefins in the presence of a zeolite H-ZSM-5 catalyst and ;~ 1 bulky heterocyclic N-containing compounds with an effective critical dimension of >6.2 A and PKa 3-9.
M e t h y l e n e Chloride I.C.l. PLC U.K. Pat. Appl. 2,095,243, Sep 29, 1982; AppI. Mar 19, 1981 Methylene chloride was prepared by treating methane with chlorine in the vapour phase in the presence of a metal exchanged zeolite catalyst containing Ag and Mn. C h l o r i n a t i o n o f A l k y l Chlorides D. R. Pyke; R. Reid I.C.I. PLC U.K. Pat. Appl. 2,095,244, Sep 29, 1982; Appl. Mar 19, 1981 Chloroalkanes, for example CH2CIv were prepared by treating an alkyl chloride, for example CH3CI with chlorine in the vapour phase in the presence of a zeolite catalyst containing Ag and Mn. C a t a l y t i c Cracking for Improved Octane Gasoline J. w. Scott Chevron Research Co. U.S. 4,359,378, Nov 16, 1982; Appl. Apr 16, 1979 Cracking-reforming catalysts containing Pt-exchanged H-ZSM and rare earth-exchanged Y zeolites give higher conversions and higher gasoline yields with higher octane numbers than conventional cracking catalysts. Para-selective Zeolite Catalysts Treated w i t h Sulphur
C h l o r i n a t i o n o f Alkanes D. R. Pyke; R. Reid I.C.I. PLC U.K. Pat. Appl. 2,095,245, Sep 29, 1982; Appl. Mar 19, 1981
Compounds
Selective chlorination of C ;~ 2 alkanes, especially the chlorination of C2H 6 for the synthesis of CH2:CHCI , can be accomplished by contacting an alkane, chlorine, and optionally an oxygen source in the vapour phase in the presence of e zeolite exchanged with Ag and/or Mn cations.
Aromatic compounds are converted to dialkyl benzenes highly enriched in the para-dialkylbenzene isomer by contact with a zeolite ZSM catalyst modified by treatment with hydrogen sulphide or sulphur dioxide.
Converting Ethane to A r o m a t i c s A. W. Chester; Y. F. Chu Mobil Oil Corp. U.S. 4,350,835, Sep 21, 1982; Appl. Feb 19, 1981 Aromatic hydrocarbons are prepared by passing ethane without added air or oxygen over a zeolite H-ZSM-5 catalyst containing small amounts of gallium.
w. w. Kaeding Mobil Oil Corp. U.S. 4,365,104, Dec 21, 1982; Appl. Jun 26, 1981
Para-selective Z e o l i t e Catalysts w. w. Kaeding Mobile Oil Corp. U.S. 4,361,713, Nov 30, 1982; Appl. Jun 26, 1981 ZSM zeolites modified by treatment with a halogen compound such as HCI, HBr, CI, Br, CCI 4 and GeCI 4 were used as catalysts for the alkylation, transelkylation or disproportionation of aromatic compounds to give dialkylbenzenes with high concentrations of the para isomer.
Extending Refining Catalyst Life L. B. Young Mobil Oil Corp. U.S. 4,356,338, Oct 26, 1982; Appl. Jul 27, 1979 Aging and coking rates of zeolite petroleum refining catalysts containing H-ZSM-5 zeolite are retarded by a pretreatment procedure involving contact with steam and/or impregnation with (NH4)2HPO 4 to yield catalysts containing 3.2-4.3 wt.%P.
Conversion o f Xylenes Containing Ethylbenzene Toray Industries Inc. Jpn. Kokai Tokkyo Koho 82,134,423, Aug 19, 1982; Appl. Feb 12, 1981 The title conversion was done in the presence of H and catalysts containing ion-exchanged mordenite-type zeolite, P and Mo, W and/or V.
Cracking Catalyst R. L. Chiang W. R. Grace and Co. Belg. 893,698, Oct 18, 1982; U.S. AppI. Jun 30, 1981
Hydrocracking of Heavy Petroleum Oils Jushitsuyu Taisaku Gijutsu Kenkyu Kumiai Jpn. Kokai Tokkyo Koho 82,141,492, Sep 1, 1982; Appl. Feb 26, 1981
Zeolite-based cracking catalysts were prepared by first exchanging Na-Y type zeolites with AI and NH 4 and then introducing rare earth metals.
The catalyst used is a super stabilized Y-type zeolite impregnated with ;=1 of Groups IV and V I I I metals.
Selective Production of Olefins L D. Rollmann Mobil Oil Corp. U.S. 4,359,595, Nov 16, 1982; Appl. Apr 28, 1980. Cont-in-part of U.S. 4,300,011
SEPARATION PROCESSES
Conversion of lower alcohols and/or ethers to lower olefins in the presence of zeolite H-ZSM-5 catalysts was improved by contacting the catalyst with bulky heterocyclic N-compounds to suppress the formation of mononuclear aromatics.
Separating Glucose f r o m Fructose R. W. Neuzil; J. W. Priegnitz UOP Inc. U.S. 4,349,668, Sep 14, 1982; AppI. May 27, 1976 Glucose was separated by selective adsorption from a glucosefructose mixture by contacting the mixture with an X-type zeolite containing potassium ions.
Z E O L I T E S , 1983, Vol 3, July
275