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Class Information
Number: 423/714
Name: Chemistry of inorganic compounds > Zeolite > Isomorphic metal substitution > Acid treatment
Description: Processes wherein zeolite structural analogues are formed by treatment with acid.

Sub-classes under this class:

Class Number Class Name Patents
423/715 Halogen containing acid 60

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8710271 Process for the production of an acylation catalyst Apr. 29, 2014
8652437 Method of manufacturing artificial zeolite Feb. 18, 2014
8568687 Method of manufacturing solid acid catalyst Oct. 29, 2013
8529869 Catalysts and method for the hydroamination of olefins Sep. 10, 2013
8524625 Compositions and methods for improving the hydrothermal stability of mesostructured zeolites by rare earth ion exchange Sep. 3, 2013
8440166 Method of synthesizing a novel absorbent titanosilicate material (UPRM-5) May. 14, 2013
8105548 Manufacturing device for zeolite membrane Jan. 31, 2012
7892510 Silicon dioxide dispersion Feb. 22, 2011
7858069 Enhancement of alkylation catalysts for improved supercritical fluid regeneration Dec. 28, 2010
7794679 Catalyst and method for purification of diesel engine exhaust gas Sep. 14, 2010
7713513 High silica zeolites: UZM-8HS May. 11, 2010
7326401 MWW type zeolite substance, precursor substance therefor, and process for producing these substances Feb. 5, 2008
7323154 Titanosilicate, process for its production, and its use in producing oxidized compound Jan. 29, 2008
6982074 High silica zeolites: UZM-5HS Jan. 3, 2006
6790433 Methods to improve heteroatom lattice substitution in large and extra-large pore borosilicate zeolites Sep. 14, 2004
6653396 Process for the preparation of zeolite A for use in formulations based on two-component polyurthane resins Nov. 25, 2003
6573131 Silica zeolite low-k dielectric thin films and methods for their production Jun. 3, 2003
6521206 Molecular sieve CIT-6 Feb. 18, 2003
6475465 Titanium-silicalite molecular sieve and the method for its preparation Nov. 5, 2002
6468501 Method for heteroatom lattice substitution in large and extra-large pore borosilicate zeolites Oct. 22, 2002
6440886 Zeolite beta and its use in aromatic alkylation Aug. 27, 2002
6221835 High density zeolites and their production Apr. 24, 2001
6191323 Process for the reduction of ketones and aldehydes to alcohols using a tin substituted zeolite beta Feb. 20, 2001
6165439 Dealuminated NU-86 zeolite and its use for the conversion of hydrocarbons Dec. 26, 2000
6162416 Zeolite beta and its use in aromatic alkylation Dec. 19, 2000
6063944 Method for preparing lattice-inserted titanium zeolites, and use thereof May. 16, 2000
6054113 Method for preparing high silica faujacitic zeolites Apr. 25, 2000
6017508 Process of modifying the porosity of aluminosilicates and silicas, and mesoporous compositions derived therefrom Jan. 25, 2000
5968341 Activated silica enriched mazzite, production method and application thereof Oct. 19, 1999
5968475 Dealuminated IM-5 zeolite Oct. 19, 1999
5932361 Ceramic based membranes Aug. 3, 1999
5900226 Drying agents for non-foamed polyurethanes May. 4, 1999
5880053 Method of producing zeolite y Mar. 9, 1999
5695736 Tiatanium containing molecular sieve having a zelite beta structure Dec. 9, 1997
5688484 Non-hydrothermal method of making a titanium-containing zeolite Nov. 18, 1997
5601798 Process for preparing zeolite Y with increased mesopore volume Feb. 11, 1997
5534135 Synthesis of zeolites Jul. 9, 1996
5508019 Dealumination of aluminosilicates Apr. 16, 1996
5451391 Process for the synthesis of a crystalline aluminosilicate enriched in silica, having the structure of mazzite, the aluminosilicate obtained and its use as catalyst for the conversion of hycro Sep. 19, 1995
5425934 Dealumination and selective removal of organic material from zeolites Jun. 20, 1995
5389357 Modified crystalline aluminosilicate zeolites and process for their preparation Feb. 14, 1995
5354719 Method of manufacturing metallosilicates Oct. 11, 1994
5310534 Process for dealuminization of the synthetic zeolites of large pores, catalysts and selective organophilic adsorbents containing the dealuminized zeolites obtained according to the process and May. 10, 1994
5298234 Alumina-silica resin additive Mar. 29, 1994
5292990 Zeolite composition for use in olefinic separations Mar. 8, 1994
5268107 Modified clinoptilolite as an ion exchange material Dec. 7, 1993
5262141 Insertion of silicon into the crystal framework of a zeolite Nov. 16, 1993
5242676 Selective surface dealumination of zeolites using dicarboxylic acid Sep. 7, 1993
5242677 Stable zeolite of low unit cell constant and method of making same Sep. 7, 1993
5238677 Process for the dealumination of mordenite Aug. 24, 1993

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