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Molecular Sieve Patent
 

Inorganic composite membrane comprising molecular sieve crystals

Inorganic composite membrane containing molecular sieve crystals, the membrane having a macroporous support to which molecular sieve crystals and modifications thereof have been applied substantially as monolayer, the crystals have been oriented to a substantial extent, such that the pores of the sieve crystals form a significant included angle with the support surface, the membrane has a gastight matrix present between the crystals.

Fixing large zeolite and zeolite-like molecular sieve crystals on moldings

Large zeolite and zeolite-like molecular sieve crystals of from 3 to 500 .mu.m are fixed on moldings by a process in which an adhesion promoter is used or the moldings are softened.

Preparation of a dimethyltetralin by cyclizing an orthotolylpentene phenylhexene using an ultra-stable crystalline aluminosilicate molecular sieve y-zeolite

A method for preparing one or more specific dimethyltetralins from either 5-(o-, m-, or p-tolyl)-pent-1- or -2-ene or 5-phenyl-hex-1- or -2-ene, and optionally for preparing one or more specific dimethylnaphthalenes from the aforesaid dimethyltetralins is disclosed wherein the orthotolylpentene or phenylhexane is cyclized to the dimethyltetralin using an ultra-stable crystalline aluminosilicate molecular sieve Y-zeolite.

Substitution of Sn in place of Al in the framework of molecular sieve via treatment with fluoride salts

Molecular sieve compositions are prepared by extracting aluminum and substituting chromium and/or tin for extracted aluminum to give molecular sieve products containing framework chromium and/or tin atoms. The process of preparing the chromium and/or tin-containing molecular sieves involves contacting a starting molecular sieve with a solution or slurry of at least one of a fluoro salt of chromium or a fluoro salt of tin under effective process conditions to provide for aluminum extraction and substitution of chromium and/or tin.


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PAT. NO. Title
151 5429743 Inorganic composite membrane comprising molecular sieve crystals
152 5413975 Fixing large zeolite and zeolite-like molecular sieve crystals on moldings
153 5401892 Preparation of a dimethyltetralin by cyclizing an orthotolylpentene phenylhexene using an ultra-stable crystalline aluminosilicate molecular sieve y-zeolite
154 5401488 Substitution of Sn in place of Al in the framework of molecular sieve via treatment with fluoride salts
155 5366616 Hydrocarbon conversion process using a chromium substituted molecular sieve
156 5365003 Shape selective conversion of hydrocarbons over extrusion-modified molecular sieve
157 5335426 Method and apparatus for thermal regeneration of molecular sieve material used in oxygen concentrators
158 5324702 Catalytic oxidation and oxidative dehydrogenation using metal-compound-loaded, deboronated hams-1b crystalline borosilicate molecular sieve compositions
159 5319114 Olefin epoxidation using a carbon molecular sieve impregnated with a transition metal
160 5318696 Catalytic conversion with improved catalyst catalytic cracking with a catalyst comprising a large-pore molecular sieve component and a ZSM-5 component
161 5316656 Hydrocarbon conversion processes with molecular sieve agglomerates having improved transport properties
162 5276236 Discrete molecular sieve and use
163 5275642 Molecular sieve for oxygen concentrator
164 5269294 Face mask impregnated with odor reducing molecular sieve material
165 5261948 Carbon molecular sieve for the kinetic separation of acid gases and fluorocarbons
166 5240891 Discrete molecular sieve and use
167 5240474 Air separation by pressure swing adsorption with a high capacity carbon molecular sieve
168 5230881 Methods for preparing substantially pure SAPO-31 silicoaluminophosphate molecular sieve
169 5211931 Removal of ethylene from silane using a distillation step after separation using a zeolite molecular sieve
170 5206194 Process for reactivating a deactivated crystalline molecular sieve group VIII metal catalyst
171 5186918 Substitution of Cr in place of Al in the framework of molecular sieve via treatment with fluoride salts
172 5173286 Fixation of elemental mercury present in spent molecular sieve desiccant for disposal
173 5168084 Molecular sieve agglomerates with improved transport properties
174 5149435 Molecular sieve arrangement and filtering method for removal of a selected constituent
175 5149421 Catalytic dewaxing process for lube oils using a combination of a silicoaluminophosphate molecular sieve catalyst and an aluminosilicate zeolite catalyst
176 5139647 Process for preparing low pour middle distillates and lube oil using a catalyst containing a silicoaluminophosphate molecular sieve
177 5110478 Catalytic conversion over membrane composed of a pure molecular sieve
178 5100596 Synthesis of membrane composed of a pure molecular sieve
179 5091073 Crystalline molecular sieve compositions MCM-37
180 5078979 Molecular sieve bed/catalyst to treat automotive exhaust
181 5077026 Ferrisilicate molecular sieve
182 5071450 Modified carbon molecular sieve adsorbents
183 5069794 Separation of mixture components over membrane composed of a pure molecular sieve
184 5057295 Boron-aluminum-phosphorus-silicon-oxide molecular sieve compositions
185 5053213 Process for synthesizing a molecular sieve having the faujasite structure and containing aluminum and gallium
186 5053211 Manufacture of AMS-18 crystalline borosilicate molecular sieve
187 5051244 Use of a molecular sieve bed to minimize emissions during cold start of internal combustion engines
188 5045295 Silicate treatment of molecular sieve agglomerates
189 5041525 Process for manufacture of shaped polyethylene terephthalate structures in the presence of molecular sieve catalyst
190 5039641 Process for modification of a molecular sieve
191 5032368 Gallium-aluminum-phosphorus-oxide molecular sieve compositions
192 5026942 Process for selective diisopropylation of naphthyl compounds using shape selective acidic crystalline molecular sieve catalysts
193 5026531 Silicate treatment of molecular sieve agglomerates
194 5019263 Membrane composed of a pure molecular sieve
195 5011591 Large-pored crystalline titanium molecular sieve zeolites
196 5003122 Process for selective diisopropylation of naphthyl compounds using shape selective acidic crystalline molecular sieve catalysts
197 4997465 Anti-fluidization system for molecular sieve beds
198 4994250 Process for synthesizing a molecular sieve having the offretite structure and containing aluminum and gallium
199 4992250 Germanium-aluminum-phosphorus-silicon-oxide molecular sieve compositions
200 4982032 Process for converting a wet acetylene-containing stream to aromatics using a zinc-promoted, crystalline, borosilicate molecular sieve catalyst composition

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