Wieslaw J. Roth,†,∥ Petr Nachtigall,‡ Russell E. Morris, and Jirí̌ Čejka*,† †J. Heyrovsky ́ Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejsǩova 3, CZ-182 23 Prague 8, Czech Republic ‡Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, Prague 2, 128 00, Czech Republic EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews KY16 9ST, Scotland Faculty of Chemistry, Jagiellonian University in Krakoẃ, ul. Ingardena 3,30-060 Krakoẃ, Poland

Two-dimensional zeolites: current status and perspectives.

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 and unusually large equilibrium adsorption capacities.

Composition of synthetic porous crystalline material, its synthesis and use

This invention relates to a new synthetic layered material, a method for its preparation and use thereof as a sorbent and as a catalyst component in catalytic conversion of organic compounds.

Synthetic layered MCM-56, its synthesis and use

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.

Synthetic porous crystalline mcm-49, its synthesis and use

The present invention relates to a microporous crystalline material of zeolitic nature, called ITQ-1A, to the process for its preparation and its use in processes of separation and transformation of organic compounds. In the roasted and anhydrous stage, the chemical composition of the material corresponds to the empirical formula: x(M1/nXO2):yYO2:SIO2, wherein x has a value smaller than 0.02 and may equal 0; y has a value smaller than 0.04 and may equal 0; m is H+ or an inorganic cation with the charge +n; X is a chemical element with an oxidation status +3 (Al, Ga, B, Cr) and Y is a chemical element with an oxidation status +4 (Ti, Ge, V). When x = 0 and y = 0, the material may be described as a new polymorphe form of microporous silica. The material of this invention is characterized also by its X ray diffraction pattern. The process for the preparation of said zeolite is characterized by the use of one or a plurality of organic additives in a reaction mixture which is crystallized through heating.

Zeolite ITQ-30

A synthetic, crystalline, porous material containing oxides of silicon and boron is disclosed, which, in the non-calcined state, has the following empyrical formula: mM2/nO,pR,xMI₂O₃,(1-x)B₂O₃,yMIIO₂,qH₂O and, in the calcined and anhydrous state, has the following empyrical formula: mM2/nO,xMI₂O₃,(1-x)B₂O₃,yMIIO₂, wherein : M is an H⁺, NH or a metal cation with valence n, MI is a trivalent metal selected from Al, Cr, Fe, Ga, V or Mn, MII is either Si or mixtures thereof with such tetravalent metals as Ge, Ti or Zr, R is piperidine or hexamethyleneimine, m has a value comprised within the range of from 0.1 to 1.5, x has a value comprised within the range of from 0 to 0.9, y has a value greater than 2 and preferably comprised within the range of from 5 to 300, p has a value greater than zero and smaller than 3, and q has a value greater than zero and smaller than 5, and having a volume of the pores larger than 0.3 cm³/g.

Synthetic, crystalline, porous material containing oxides of silicon and boron

A crystalline, porous, synthetic material is disclosed, together with its related preparation process. Such a material of zeolitic character, containing silicon, titanium and aluminum oxides, corresponds, in its calcined and anhydrous state, to the following empirical formula: p HAlO.sub.2.q TiO.sub.2.SiO.sub.2 wherein p has a value greater than zero and lower than or equal to 0.050, q has a value greater than zero and lower than or equal to 0.025, and the H + of HAlO 2 can be at least partly replaceable or replaced by cations.

Synthetic, crystalline, porous material containing silicon oxide, titanium oxide and aluminum oxide

A process for oligomerizing propylene is described, consisting of reacting said olefin in the presence of an X-ray amorphous alumina-silica gel catalyst with a silica/alumina molar ratio of between 30/1 and 500/1, a surface area of between 500 and 1000 m²/g, a total pore volume of between 0.3 and 0.6 ml/g, an average pore diameter of the order of 10 A or less, and free or substantially free of pores with a diameter greater than 30 A.

Process for oligomerizing light olefins

A catalyst is described for the preparation of isobutene by dehydroisomerization of n-butane consisting of a solid, granular support of porous gamma-alumina on the surface of which catalytic quantities of platinum, silica and preferably also one or more promotors are deposited. In a preferred form of embodiment this catalyst is used with a second catalyst which may be formed of Boralite B or a solid granular support of gamma-alumina on the surface of which catalytic quantities of silica are deposited. The present invention relates also to the process of dehydroisomerization of n-butane to isobutene in which the catalyst is used and the relative operating conditions.

Dehydroisomerisation catalyst and its use in the preparation of isobutene from N-butane

"PROCESS FOR OLIGOMERIZING LIGHT OLEFINS OR THEIR MIXTURES" Abstract A process is disclosed for oligomerizing light olefins or their mixtures, which consists in reacting said olefins, possibly diluted with an inert gas, by means of synthetic zeolites containing oxides of silicon, titanium and aluminum, which have, in their calcined and anhydrous state, the following empirical formula: pHALO2 ? qTiO2 ? SiO2, wherein e has a value larger than zero and smaller than, or equal to, 0.050 and g has a value larger than zero and smaller than, or equal to, 0.025, and the H+ of HALO2 can be at least partially substitutable or. substituted with cations.

Aldo Giusti

Papers

Synthetic, crystalline, porous material containing oxides of silicon and boron

Synthetic, crystalline, porous material containing silicon oxide, titanium oxide and aluminum oxide

Process for oligomerizing light olefins

Dehydroisomerisation catalyst and its use in the preparation of isobutene from N-butane

Process for oligomerizing light olefins or their mixtures