Abstract: Zeolite beta is synthesized hydrothermally from an aqueous reaction mixture containing the conventional reactive sources of SiO.sub.2, Al.sub.2 O.sub.3 and Na.sub.2 O tetraethylammonium halide as the source of the crystallization directing tetraethylammonium ions and diethanolamine as the agent providing the increased basicity necessary for the formation of zeolite beta crystals. Seed crystals of zeolite beta are optionally employed to shorten the crystallization period.

Abstract: Agglomerates of zeolitic molecular sieves which are bonded with particles of generally spherical amorphous colloidal-sized silica particles having nominal diameters in the range of 40 to 800 nanometers are found to have increased adsorption capacity for many molecular species due to the development in the binder of a pore system created by the packing of the silica spheres. When the molecular sieves employed are highly siliceous and hydrophobic, the agglomerates are ideally suited for use in odor elimination applications in which unagglomerated molecular sieve particles create dusting and handling problems.

Abstract: The catalytic conversion of hydrocarbon feedstocks is affected under effective conversion process conditions in the presence of silicoaluminophosphate-based catalyst compositions.

Abstract: The removal of aluminum and silicon atoms from the framework of crystalline zeolites and the reinsertion of at least some of the removed silicon atoms into the sites vacated by extracted aluminum atoms is accomplished by the process of contacting the zeolite with an aqueous solution of a bifluoride salt, preferably ammonium bifluoride. The treated zeolites have higher crystal destruction temperatures than their precursor starting zeolites.

Abstract: Hydrothermal treatment of silicoaluminophosphate molecular sieves at temperatures in excess of about 700.degree. C. for periods sufficient to destroy a large proportion of their acid sites while retaining at least 80 percent of their crystallinity is found to result in a catalyst for converting methanol to lower olefins having increased catalyst life, increased selectivity for C.sub.2 -C.sub.3 olefins and decreased selectivity for paraffin production than the untreated SAPO-n starting composition.

Abstract: Stable aqueous suspensions of crystalline aluminosilicate molecular sieve particles, particularly hydrophobic crystalline siliceous molecular sieves, are provided in compositions having a consistency ranging from thin lotions to semi-solid "stick" formulations. The aqueous suspensions are maintained using hydrophilic colloids, particularly a mixture of a colloidal magnesium silicate having the structure of smectite and an alkali metal salt of the carboxymethoxy ether of cellulose.

Abstract: This invention relates to surface cleaner/polish compositions comprising (i) a volatile liquid carrier selected from water, a monohydroxy alcohol having from 1 to 5 carbon atoms and mixtures thereof, and (ii) a crystalline aluminosilicate selected from Zeolite A, Zeolite X, Zeolite, Y, Zeolite P and mixtures thereof as an abrasive material, wherein said crystalline aluminosilicate has a particle size distribution sufficient to (a) provide enhanced wettability properties, (b) provide enhanced dispersion stability, (c) provide enhanced anti-fogging properties, (d) reduce or eliminate residual filming, and/or (e) reduce or eliminate dust during surface removal. This invention also relates to a process for preparation of the surface cleaner/polish compositions.

Abstract: This invention pertains to a hydrocracking process for mid-distillate products and to hydrocracking catalysts having improved selectivity, activity and stability for use in the production of mid-distillate products from heavy gas oil feedstocks boiling above 700.degree. F.

Abstract: Natural clinoptilolites which have been ion-exchanged with particular proportions of metal cations such as lithium, sodium, potassium, calcium, magnesium, barium, strontium, zinc, copper, cobalt, iron and manganese, are novel and useful for the removal of traces of carbon dioxide and water from streams of hydrocarbons having kinetic diameters of not more than about 5.

Abstract: Process for hydrocracking a crude oil feed, hydrocracking catalyst employed therein and the process for its preparation.

Abstract: Ammonia, particularly aqueous ammonia is sequestered in unexpected large amounts on zeolite molecular sieves having high proportions of silica with respect to alumina in their crystal frameworks. While conventional adsorption mechanisms are to some degree involved, it is apparent from the fact that the characteristic odor of ammonia is not detectable by the human sense of smell over the ammonia-loaded adsorbents indicates that other mechanisms are operable. These properties provide the basis for processes and products which are useful in removing ammonia from an environment to alleviate health hazards or unpleasant odor.

Abstract: Novel catalyst bases are described which are prepared by hydrothermally treating an ammonium ion exchanged sodium Y zeolite followed by low pH ammonium ion exchange to produce highly crystalline zeolite catalyst base. Catalysts incorporating such novel zeolite catalyst bases, as well as hydrocracking and fluid catalytic cracking processes for the production of gasoline products utilizing catalysts incorporating such novel catalyst bases, are also described.

Abstract: Aluminophosphate-based molecular sieve compositions having the crystal structure of AlPO.sub.4 -54 are stabilized against framework collapse or conversion to other crystal structures by treatment in their hydrated state with boric acid or salts thereof. The stabiized products are characterized, in addition to their essential AlPO.sub.4 -54 structure, by the presence of at least 6 ppm of extraneous boron.

Abstract: A process for treating crystalline aluminophosphates to provide aluminophosphates having modified catalytic properties. The crystalline aluminophosphates are contacted with a halogen-derived compound at an effective temperature and for an effective time to alter the surface characteristics of the aluminophosphates with resulting modification of catalytic properties.

Abstract: In the process for inserting extraneous silicon atoms into lattice sites of zeolite crystals from which aluminum atoms have been extracted, it has been found that the use of more concentrated fluorosilicate salt solutions and shorter contact times between the zeolite crystals and the salt solution than heretofore proposed, enables the production of more highly siliceous products with less defect structure. Advantageously the zeolite crystals are contacted with the concentrated fluorosilicate salt solution in a stepwise manner with the crystals being washed to remove fluoride ions between each contact with the salt solution.

Abstract: In the purification of light hydrocarbons to remove carbonyl sulfide impurity by selective adsorption thereof on molecular sieve adsorbents, significant losses of the hydrocarbon are incurred by its coadsorption on the adsorbent with the COS impurity. Conventional desorption procedures produce a desorbate which is a non-commercial mixture of COS and hydrocarbon. The purge desorption method of the present invention utilizing a mixture of CO.sub.2 and a non-sorbable purge gas permits recovery of the coadsorbed hydrocarbon in a pure and commercially useful form.

Abstract: Clinoptilolites, including both natural clinoptilolites and those which have been ion-exchanged with metal cations such as lithium, sodium, potassium, calcium, magnesium, barium, strontium, zinc, copper, cobalt, iron and manganese, are useful for the removal of traces of carbon dioxide and water from streams of hydrocarbons having kinetic diameters of not more than about 5 .ANG..

Abstract: A sensor for determining the concentration of a gaseous component of interest is disclosed which comprises a sensing element comprising an inorganic crystalline composition including at least one metal component in an amount effective to provide a signal related to the concentration of the gaseous component of interest, the inorganic crystalline composition having been grown, or derived from a material grown, by crystal growth upon at least a portion of the surface of an inorganic oxide composition to form a composite with at least two substantially contiguous phases which exhibit at least one of a distinct compositional heterogeneity and a distinct structural heterogeneity of one phase to the other; and processing means to process the signal and provide a basis for determining the concentration of the gaseous component of interest.

Abstract: This invention relates to multi-compositional, multiphase composite compositions comprising as phases thereof (i) an electronically conducting or semi-conducting substrate, (ii) an inorganic oxide composition layer in proximity to at least a portion of the surface of said electrically conducting or semi-conducting substrate and (iii) an inorganic crystalline molecular sieve composition layer upon at least a portion of the surface of said inorganic oxide composition layer. The inorganic crystalline molecular sieve composition layer is grown by crystal growth upon at least a portion of the inorganic oxide composition layer surface. The different phases of the composite compositions are substantially contiguous and exhibit a distinct compositional and/or structural heterogeneity of one phase to another.

Abstract: A novel family of crystalline, microporus aluminophosphate compositions is synthesized by hydrothermal crystallization at elevated temperatures of aluminophosphate gels containing a molecular structure forming template. The family comprises a number of distinct species, each with a unique crystal structure. Calcination removes volatile extraneous matter from the intracrystalline void space and yields microporus crystalline adsorbents with uniform pores, the dimensions of which vary, among the individual species, from about 3A to 10A diameter. The composition exhibit properties somewhat analogous to zeolitic molecular sieves which render them useful as catalysts or catalyst bases in chemical reactions such as hydrocarbon conversions.