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Class Information
Number: 585/488
Name: Chemistry of hydrocarbon compounds > Aromatic compound synthesis > By dealkylation > Using extraneous agent in reaction zone, e.g., catalyst, etc. > And h
Description: Subject matter wherein the reaction takes place in the presence of elemental hydrogen.










Sub-classes under this class:

Class Number Class Name Patents
585/489 Transition metal-containing catalyst 110


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8609919 Aromatic transformation using UZM-44 aluminosilicate zeolite Dec. 17, 2013
8586809 Purification of transalkylation feedstock Nov. 19, 2013
8168844 Catalytic compositions for the highly selective hydrodealkylation of alkylaromatic hydrocarbons May. 1, 2012
8071832 Method of converting ethylbenzene and process for producing p-xylene Dec. 6, 2011
8071828 Transalkylation of heavy aromatic hydrocarbon feedstocks Dec. 6, 2011
7880045 Process for the catalytic hydrodealkylation of alkylaromatic hydrocarbons Feb. 1, 2011
7723554 Process for the selective catalytic hydrodealkylation of alkylaromatic hydrocarbons May. 25, 2010
7553998 Energy-efficient process for para-xylene production Jun. 30, 2009
6900365 Process for converting heavy hydrocarbon feeds to high octane gasoline, BTX and other valuable aromatics May. 31, 2005
RE38532 Hydrodealkylation processes Jun. 8, 2004
6627780 Catalyst composition and processes therefor and therewith Sep. 30, 2003
6593503 Process for making aromatic hydrocarbons using an acid treated zeolite Jul. 15, 2003
6359184 Process for production of xylene Mar. 19, 2002
6207871 High-purity meta-xylene production process Mar. 27, 2001
6133494 Catalyst composition comprising acid-base leached zeolites Oct. 17, 2000
6040490 Process for producing aromatic compounds by dealkylation, transalkylation, or disproportionation Mar. 21, 2000
5929295 Hydrodealkylation and transalkylation of C.sub.9 + aromatic compounds Jul. 27, 1999
5907074 Catalyst composition and processes therefor and therewith May. 25, 1999
5877374 Low pressure hydrodealkylation of ethylbenzene and xylene isomerization Mar. 2, 1999
5866743 Hydrodealkylation processes Feb. 2, 1999
5866741 Transalkylation/hydrodealkylation of a C.sub.9 + aromatic compounds with a zeolite Feb. 2, 1999
5866744 Process for converting a c.sub.9 + hydrocarbon to a C.sub.6 to C.sub.8 aromatic using a steamed, acid-leached, impregnated zeolite Feb. 2, 1999
5866742 Transalkylation/hydrodealkylation of C.sub.9 + aromatic compounds with a zeolite Feb. 2, 1999
5856609 Aromatic hydrodealkylation process with sulfur oxide containing catalyst Jan. 5, 1999
5856608 Hydrotreating catalyst composition and processes therefor and therewith Jan. 5, 1999
5849969 Hydrodealkylation processes Dec. 15, 1998
5847256 Process for producing xylene Dec. 8, 1998
5817903 Hydrotreating catalyst composition and processes therefor and therewith Oct. 6, 1998
5811615 Hydrotreating catalyst composition and processes therefor and therewith Sep. 22, 1998
5789642 Hydrocarbon conversion catalyst composition and processes therefor and therewith Aug. 4, 1998
5763721 Hydrodealkylation of C9+ aromatic compounds Jun. 9, 1998
5744674 Catalyst and process for the conversion of heavy aromatics to light aromatics Apr. 28, 1998
5714660 Catalyst composition and processes therefor and therewith Feb. 3, 1998
5714659 Catalyst composition and processes therefor and therewith Feb. 3, 1998
5698757 Hydrodealkylation catalyst composition and process therewith Dec. 16, 1997
5457255 Catalysts for hydrogenolytic dealkylation and use thereof Oct. 10, 1995
5382734 Thermal reforming of naphthenic and hydrodealkylation of aromatic feedstocks to produce benzene Jan. 17, 1995
5278344 Integrated catalytic reforming and hydrodealkylation process for maximum recovery of benzene Jan. 11, 1994
5132480 Hydrodealkylation process Jul. 21, 1992
5053574 Hydrodealkylation of alkylaromatic compounds Oct. 1, 1991
5043513 Catalytic hydrodealkylation of aromatics Aug. 27, 1991
5003119 Manufacture of alkylbenzenes Mar. 26, 1991
5001296 Catalytic hydrodealkylation of aromatics Mar. 19, 1991
4677240 Hydrocarbon conversion processes over crystalline borosilicate catalysts for pseudocumene recovery Jun. 30, 1987
4560820 Alkylaromatic dealkylation Dec. 24, 1985
4482773 Catalyst for xylene isomerization Nov. 13, 1984
4469909 Heavy aromatics process Sep. 4, 1984
4467129 Conversion of xylenes containing ethylbenzene Aug. 21, 1984
4436945 Method of hydro-dealkylation Mar. 13, 1984
4431857 Modification of hydrocarbon conversion processes over crystalline borosilicate catalysts by addition of water Feb. 14, 1984

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