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Class Information
Number: 585/483
Name: Chemistry of hydrocarbon compounds > Aromatic compound synthesis > By dealkylation
Description: Subject matter wherein a side-chain is wholly or partially removed from the ring of an aromatic, e.g., the demethylation of ethylbenzene or xylene to form toluene and/or benzene, etc.

Sub-classes under this class:

Class Number Class Name Patents
585/484 Polycyclic 10
585/486 Using extraneous agent in reaction zone, e.g., catalyst, etc. 117

Patents under this class:

Patent Number Title Of Patent Date Issued
8586809 Purification of transalkylation feedstock Nov. 19, 2013
8426663 Catalytic conversion of alkylaromatic compounds Apr. 23, 2013
8084657 Integrated process for the production of P-xylene Dec. 27, 2011
7897829 Olefinic feedstock treatment processes Mar. 1, 2011
RE41136 Process for preparing 2,6-dialkylnaphthalene Feb. 16, 2010
7396966 Olefinic feedstock treatment processes Jul. 8, 2008
7169730 Modified carbide and oxycarbide containing catalysts and methods of making and using thereof Jan. 30, 2007
7151199 Hydrocarbon conversion processes using non-zeolitic molecular sieve catalysts Dec. 19, 2006
6900365 Process for converting heavy hydrocarbon feeds to high octane gasoline, BTX and other valuable aromatics May. 31, 2005
6746597 Supported noble metal nanometer catalyst particles containing controlled (111) crystal face exposure Jun. 8, 2004
RE38532 Hydrodealkylation processes Jun. 8, 2004
6677496 Process for the coproduction of benzene from refinery sources and ethylene by steam cracking Jan. 13, 2004
6179996 Selective purge for hydrogenation reactor recycle loop Jan. 30, 2001
6096938 Zeolite catalyst with enhanced dealkylation activity and method for producing same Aug. 1, 2000
6040490 Process for producing aromatic compounds by dealkylation, transalkylation, or disproportionation Mar. 21, 2000
6018086 Process for preparing 2,6-dialkylnaphthalene Jan. 25, 2000
5962758 Process of producing ethylbenzene using alkylation and transalkylation with propylbenzene destruction Oct. 5, 1999
5866743 Hydrodealkylation processes Feb. 2, 1999
5856608 Hydrotreating catalyst composition and processes therefor and therewith Jan. 5, 1999
5849969 Hydrodealkylation processes Dec. 15, 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
5714660 Catalyst composition and processes therefor and therewith Feb. 3, 1998
5714659 Catalyst composition and processes therefor and therewith Feb. 3, 1998
5689026 Hydrodealkylation process Nov. 18, 1997
5457255 Catalysts for hydrogenolytic dealkylation and use thereof Oct. 10, 1995
5278344 Integrated catalytic reforming and hydrodealkylation process for maximum recovery of benzene Jan. 11, 1994
5210350 Method of preparing an alkylated aromatic product with an alkylation zeolite and a dealkylation zeolite May. 11, 1993
5160500 Zeolite synthesis using an alcohol or like molecules Nov. 3, 1992
4806700 Production of benzene from light hydrocarbons Feb. 21, 1989
4670615 Hydrocarbon compound conversion Jun. 2, 1987
4577049 Alkylation of durene utilizing high boiling condensed polyaromatic compounds Mar. 18, 1986
4551235 Utility conservation in hydrogen recycle conversion processes Nov. 5, 1985
4536276 Hydrogen conservation in hydrogen recycle hydroconversion processes Aug. 20, 1985
4469909 Heavy aromatics process Sep. 4, 1984
4463206 Process for producing benzene by hydrodealkylation of a hydrocarbon fraction comprising alkyl-aromatic hydrocarbons, olefinic hydrocarbons and sulfur compounds Jul. 31, 1984
4387261 Treatment of effluent resulting from conversion of methanol to gasoline in order to decrease durene and produce distillate Jun. 7, 1983
4347398 Process for preparation of 1-methyl-3,5-diisopropyl benzene Aug. 31, 1982
4314091 Preparation of 1-methyl-3,5-diisopropyl benzene from charge streams containing diisopropyl toluene Feb. 2, 1982
4247729 Process for producing high purity benzene Jan. 27, 1981
4238368 Water dealkylation catalyst of aromatic hydrocarbons Dec. 9, 1980
4191632 Process for the production of benzene from hydrocarbon fractions rich in alkyl-aromatic hydrocarbons and containing paraffinic and naphthenic hydrocarbons Mar. 4, 1980
4167533 Co-production of ethylene and benzene Sep. 11, 1979
4157355 Combination process for selected aromatic hydrocarbon production Jun. 5, 1979
4115247 Benzene production by solvent extraction and hydrodealkylation Sep. 19, 1978
4053388 Process for preparing aromatics from naphtha Oct. 11, 1977
4031154 Benzene by hydrogenative dealkylation Jun. 21, 1977

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