Abstract: A method for preparing a molecular sieving metallosilicate is disclosed which comprises(A) providing an aqueous dispersion of colloidal particles comprising contiguous mixtures of silica and the oxide of a transition metal selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Zr, Y or a mixture of two or more of said metals;(B) mixing an effective amount of a mineralizing agent and/or synthesis directing agent with said dispersion to form a gel; and(C) maintaining said gel at a temperature of about 80.degree. C. to about 300.degree. C. for an effective period of time to provide said metallosilicate.

Abstract: The present invention relates to siliceous zeolite catalysts produced by a method which includes selecting an amount of aluminum framework species to be retained in a zeolite catalyst product, and use of a silicon substitution treatment to replace more reactive framework species used to control aluminum framework concentration. This technique substantially preserves the selected amount of the aluminum framework species. The zeolite product obtained has high reactivity and stability.

Abstract: A zeolite related to zeolite L and having a characteristic cylindrical morphology may be prepared from a crystallization gel comprising (in mole ratios of oxides):K.sub.2 O/SiO.sub.2 --0.22-0.36H.sub.2 O/K.sub.2 O--25-90SiO.sub.2 /Al.sub.2 O.sub.3 --6-15and preferably with the mole ratio H.sub.2 O/K.sub.2 O+Al.sub.2 O.sub.3 +SiO.sub.2 being at least 8. The cylindrical Zeolite L may be used as a catalyst base in aromatization of acyclic hydrocarbons with high benzene yields being sustained over commerically feasible periods.

Abstract: This invention relates to a new synthetic porous crystalline material, a method for its preparation and use thereof in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern.

Abstract: This invention relates to a new synthetic crystalline microporous oxide material, a method for its preparation and use thereof in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern.

Abstract: A crystalline aluminosilicate, ISI-6, having a composition represented by the general formula (I) after being calcined in air at 550.degree. C., .sub.p M.sub.2/n O.Al.sub.2 O.sub.3.q SiO.sub.2 . . . (I) wherein M represents at least one element selected from hydrogen, alkali metals, and alkaline earth metals, n represents the valence of M, and p and q are within the ranges of 0.05.ltoreq.p.ltoreq.3.0 and 60.ltoreq.q.ltoreq.500.

Abstract: There is disclosed a process for the production of carbon disulfide and hydrogen sulfide from a particulate carbon source. In one embodiment, an oxygen containing gas is reacted with a particulate carbon source in a one step process so as to provide the temperatures necessary for the reaction of the particulate carbon source with sulfur to produce carbon disulfide. In another embodiment, a source of hydrogen is introduced along with the oxygen containing gas and sulfur so as to produce hydrogen sulfide in a single step process.

Abstract: All silica zeolites are prepared using magadiite as a source of silica.

Abstract: Disclosed is a zeolite having a composition of the following formula: xM.sub.2/n O.Al.sub.2 O.sub.3.(5-10)SiO.sub.2.yH.sub.2 O wherein M is at least one cation having a valency of n, and x is 0.8-2 and y is 0-10, and exhibiting an X-ray powder diffraction pattern shown in Table 1. This zeolite is prepared by a process wherein a reaction mixture comprising a silica source, an alumina source, an alkali source, a potassium source and water and having a composition satisfying the following molar ratios: SiO.sub.2 /Al.sub.2 O.sub.3 =6-40, OH/SiO.sub.2 =0.3-1, K.sub.2 O/M.sub.2 O=0.1-0.9 (M: the total of alkali metals), and H.sub.2 O/SiO.sub.2 =10-70, is crystallized at 120.degree. to 200.degree. C. with stirring. The zeolite is also prepared by a process wherein a granular amorphous aluminosilicate containing aluminum in an amount of 4 to 22 wt. % as Al.sub.2 O.sub.

Abstract: A method for preparing mullite (3Al.sub.2 O.sub.3.2SiO.sub.2) by partially hydrolyzing a dilute silicon alkoxide solution, combining an aluminum alkoxide with the partially hydrolyzed silicon alkoxide, eliminating terminal alkoxide groups and firing the material to about 985.degree. C.

Abstract: A process for preparing porous crystalline alumino-silicates consisting of bringing into contact, in an aqueous environment, sodium silicate with an aluminum derivative at a molar SiO.sub.2 /Al.sub.2 O.sub.3 ratio greater than or equal to 8, in the presence of one or more alkaline hydroxides at a molar Me.sup.+ /SiO.sub.2 ratio greater than 0.6, where Me.sup.+ represents the alkaline metal or metals, and in the presence of a mineralizing agent, operating at a temperature of between 20.degree. and 100.degree. C., and controlling the molar OH.sup.- /SiO.sub.2 ratio of the resultant mixture at a value of 0.01 and 0.8, the resultant mixture being crystallized at said molar OH.sup.- /SiO.sub.2 ratio in a closed environment for a period of between some hours and 40 days at a temperature of between 100.degree. and 200.degree. C.

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: The invention relates to a purifier for purifying an industrial raw material gas, formed by depositing a hydrogenated or a fluorinated amorphous substance of an element selected from a group consisting of Si and Ge on a carrier such as a zeolite. The industrial raw material gas to be purified is brought into contact with the purifier, which is maintained at a predetermined temperature, to remove simultaneously a small amount of oxygen and water components from the industrial raw material gas.

Abstract: A molecular sieving metallosilicate is disclosed which comprises a complex represented in terms of mole ratios of oxides by the formula: ##STR1## wherein A is an ammonium, alkyl ammonium, alkyl phosphonium or alkyl arsonium ion; D is an alkali or alkaline earth metal ion or a mixture of two or more thereof; E is selected from the group consisting of Al, B, Mo, W, Fe, or a mixture of two or more thereof; M is a tetravalent metal selected from the Lanthanide or Actinide series; a is a number ranging from zero to about 25; b is a number ranging from zero to about 1.5; c is a number ranging from zero to about 0.3; d is a number ranging from about 20 to about 500; e is a number ranging from zero to about 200. The X-ray diffraction pattern for these metallosilicates indicates a ZSM-5 like crystalline structure. A method for making these metallosilicates, and a method for dehydrating and reforming methanol using these metallosilicates are disclosed.

Abstract: A crystalline zinc silicate mineral of the sauconite, hemimorphite or willemite type is prepared by subjecting an acid-treated product of a clay mineral and an oxide or hydroxide of zinc or a compound capable of forming this oxide or hydroxide under reaction conditions to a hydrothermal treatment. This crystalline zinc silicate mineral has a fine and uniform particle size and is excellent in the pigmenting characteristics.

Abstract: Crystalline zeolites and zeolitic materials are prepared by crystallization from an aqueous mixture comprising a source of silica, optionally a source of alumina, and an ion-exchange resin preferably an anion-exchange resin. In a preferred form of the invention the anion-exchange resin is in the hydroxide form and the reaction mixture also contains a quaternary ammonium compound.

Abstract: A faujasite zeolite of a high purity and a desired silica/alumina ratio is prepared by crystallizing at an elevated temperature a reaction mixture comprising a silica source, an alumina source, and an alkali metal source, wherein a transparent faujasite germ solution obtained by mixing and aging aqueous alkali metal silicate solution, an aqueous alkali metal aluminate solution and an aqueous alkali metal hydroxide solution is made present in the reaction mixture. The faujasite germ solution has an oxide molar composition represented by the following molar ratios:SiO.sub.2 /Al.sub.2 O.sub.3 =8 to 14,M.sub.2 O/Al.sub.2 O.sub.3 =7 to 30,andH.sub.2 O/M.sub.2 O=10 to 14,wherein M represents an alkali metal.The amount of the faujasite germ solution is 1 to 30 wt. % as Al.sub.2 O.sub.3 based on the faujasite zeolite.

Abstract: A method is provided for enhancing the shape selectivity of a crystalline zeolite having a silica-to-alumina mol ratio greater than 10. The method consists of treating the zeolite with an ammonium fluoride solution at moderately elevated temperature, in the absence or in the presence of a matrix. The products are useful as shape-selective sorbents, and also as shape-selective catalysts for organic reactions including catalytic dewaxing.

Abstract: The present invention relates to a method of preparing B-trichloroborazine, B.sub.3 N.sub.3 Cl.sub.3 H.sub.3. Generally, the method includes the combination of gaseous boron trichloride in an anhydrous aprotic organic solvent followed by addition of excess gaseous ammonia at ambient temperature or below. The reaction mixture is heated to between about 100.degree. to 140.degree. C. followed by cooling, removal of the solid ammonium chloride at ambient temperature, distillation of the solvent under vacuum if necessary at a temperature of up to about 112.degree. C., and recovery of the B-trichloroborazine. Solvents include, toluene, benzene, xylene, chlorinated hydrocarbons, chlorinated aromatic compounds, or mixtures thereof. Toluene is a preferred solvent. The process provides a convenient synthesis of a material which often decomposes on standing. B-trichloroborazine is useful in a number of chemical reactions, and particularly in the formation of high temperature inorganic polymers and polymer precursors.

Abstract: The invention provides a silica-based crystalline material that incorporates titanium into the crystal lattice. A process for preparing this material is also disclosed which is based on the reaction of silica, tetra-alkyl orthotitante and tetrapropyl-ammonium hydroxide.