Intevep, S.a.

Universidad Simon Bolivar

Silica De Panama S.a.

Inteven, S.a.

Juan A Lujano

Nelson P Martinez

Yilda Margot Romero

Jose Carrazza

Jorge Alejandro Tejada

Jose R Velasquez

Nieves Alvarez

Norma Valencia De Zapata

Roberto E Galiasso

Carlos Zerpa

Francisco Machado

Carmen M Lopez

Jose Rafael Cordova

William D McEwen

Nelson Socorro

Norma Valencia

Jose R Valasquez

Nelson Martinez

Javier Revete

Luis Rivas

Jacek Lubinkowski

Jose Manuel Cruz

A material with cationic exchanger properties is introduced into aqueous media, where the equilibriums of carbon dioxide dissolution take place. A cationic exchanger material x/nMEis used to capture hydronium cations (HO) according to:ME()+HO(aq)=HOE()+M(aq)where 'x' stands for molar amount of the anionic centers of charge of the cationic exchanger material Ebalanced by x/n molar amount of metal M, 'n' stands for the metal valence, and M is selected from the group consisting of 1A and/or 2A of the periodic table of elements. This capture of the hydronium cations, HO, shifts certain reaction equilibriums to the right, according to Le Chatelier's principle, producing more bicarbonate, HCO, and/or carbonate, CO, than would otherwise be obtained.

Conversion of gaseous carbon dioxide into aqueous alkaline and/or alkaline earth bicarbonate solutions

A composition of matter is provided including an inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 &angst; and about 100 &angst; and a narrow diameter distribution of less than or equal to about 30 &angst;, the material having a void volume from the mesopore-sized channels of at least about 0.1 cc/g and a surface area of at least about 500 m /g and having a number of hydroxyl groups of at least about 1.5 mmol of hydroxyl groups per gram of material, and exhibiting thermal and hydrothermal stability at temperatures up to about 500&deg; C. Catalytic materials incorporating aluminum and other active metals, as well as a process for preparing the composition, are also disclosed.

Stable synthetic material and method for preparing same

A composition of matter is provided including an inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 &angst; and about 100 &angst; and a narrow diameter distribution of less than or equal to about 30 &angst;, the material having a void volume from the mesopore-sized channels of at least about 0.1 cc/g and a surface area of at least about 500 m,/g and having a number of hydroxyl groups of at least about 1.5 mmol of hydroxyl groups per gram of material, and exhibiting thermal and hydrothermal stability at temperatures up to about 500&deg; C. Catalytic materials incorporating aluminum and other active metals, as well as a process for preparing the composition, are also disclosed.

A composition of matter is provided including an inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 .ANG. and about 100 .ANG. and a narrow diameter distribution of less than or equal to about 30 .ANG., the material having a void volume from the mesopore-sized channels of at least about 0.1 cc/g and a surface area of at least about 500 m.sup.2 /g and having a number of hydroxyl groups of at least about 1.5 mmol of hydroxyl groups per gram of material, and exhibiting thermal and hydrothermal stability at temperatures up to about 500.degree. C. Catalytic materials incorporating aluminum and other active metals, as well as a process for preparing the composition, are also disclosed.

The present invention relates to a zeolite catalyst, a process for using the catalyst for conversion of hydrocarbons, especially naphtha and LPG feedstock, and a process for preparing the catalyst.

MTW zeolite for cracking feedstock into olefins and isoparaffins

The invention relates to a synthetic crystalline material and its use in catalytic conversion of organic compounds and as a sorbent. The crystalline material contains one or more microporous crystalline phases, having a micropore volume greater than or equal to about 0.15 cc/g distributed in channels between about 3 to about 15 .ANG. in average diameter which is rendered accessible by a mesopore volume of greater than or equal to about 0.1 cc/g distributed in channels between about 20 to about 100 .ANG. in average diameter. A process is also provided for preparing the crystalline material of the present invention.

Material with microporous crystalline walls defining a narrow size

A process for preparing an inorganic porous material, includes the steps of forming a solution of a hydrolyzable inorganic compound with a non-ionic surfactant having organic molecules; inducing growth and condensation of a solid composition comprising an inorganic composition in intimate contact with said organic molecules; and extracting said organic molecules from said inorganic composition so as to provide said inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 .ANG. to about 100 .ANG. and a narrow diameter distribution of less than or equal to about 30 .ANG., said material having a void volume from said mesopore-sized channels of at least about 0.1 cc/g.

Synthetic material with high void volume associated with mesoporous

An antimony and tin containing compound for passivating contaminant metals to which a catalyst is exposed during fluid catalytic cracking of hydrocarbons containing said contaminant metals, said compound having a composition as follows (R*).sub.x Sb(OSn(R**).sub.3).sub.n wherein R* and R** are aryl compounds having between 6 to 13 carbon atoms, wherein n=1, 2 or 3 and x=4 when n=1, x=3 when n=2, and x=0 when n=3.

Antimony and tin containing compound, use of such a compound as a

A zeolitic material with a crystalline structure of MFI type has a ratio of silica to alumina which is lower than 26, and is hydrothermally prepared without organic template reagents or seeding procedures. Crystalline structure is obtained by forming a mixture of a silicon dioxide source, an alkali metal hydroxide, an aluminum source and water, all reactants with the following molar ratios: ##EQU1## where M is an alkali metal, and reacting the mixture at a temperature from 160.degree. to 180.degree. C. for 40-80 hours. The material is characterized by X-ray diffraction, and has good cracking activity and improved selectivity for gasoline octanes.

Method for recharging a spend fluid catalytic cracking process catalyst

Zeolitic catalyst of MFI type, its preparation and use

A method for making a catalyst containing a vanadium passivating agent in the form of anatase crystalline TiO.sub.2 including a method for processing hydrocarbon feeds containing vanadium.

Growing community of inventors

Edo Miranda, Venezuela

Juan A Lujano