Consejo Superior De Investigaciones Cientificas

Huntsman International LLC

Universidad Politècnica De València

Pablo Botella Asunción

Christopher John Mitchell

Avelino Corma Canos

Avelino Corma

Robert Henry Carr

Joris Karel Peter Bosman

José Manuel López Nieto

Maria Isabel Vazquez Navarro

Ana Dejoz García

Jose Manuel López Nieto

Benjamín Solsona Espriu

A process for providing methylene-bridged polyphenyl polyamines from aniline and formaldehyde according to the invention comprises the subsequent steps of a) condensing aniline and formaldehyde; b) reacting, in a first catalytic reaction step, said condensate over a solid catalyst, whereby an intermediate mixture is provided; c) converting, in a subsequent catalytic reaction step, said intermediate mixture into methylene-bridged polyphenyl polyamines in presence of a subsequent solid catalyst, thereby providing said methylene-bridged polyphenyl polyamines.

Process for the production of methylene-bridged polyphenyl polyamines

A catalyst for the selective oxidation and amoxidation of alkanes and/or alkenes, particularly in processes for obtaining acrylic acid, acrylonitrile and derivatives of these, including a least one oxide of Mo, Te, V, Cu and at least another A component selected from among Nb, Ta, Sn, Se, W, Ti, Fe, Co, Ni, Cr, Ga, Sb, Bi, a rare, alkaline or alkali-earth earth, in such a way that the catalyst presents, in a calcined form, an X-ray diffractogram with five intensive diffraction lines, typically the most intense corresponding to diffraction angles of 2&#x3b8; at 22.1&#xb1;0.4, 27.1&#xb1;0.4; 28.1&#xb1;0.4, 36.0&#xb1;0.4 and 45.1&#xb1;0.4. In the preferred embodiment, the catalyst has the following empiric formula:MoTeVCuAO

Catalyst for selective oxidation and amoxidation of alkanes and/or alkenes, particularly in processes for obtaining acrylic acid, acrylonitrile and the derivatives thereof

The invention relates to a method for the oxidative dehydrogenation of ethane. The inventive method is characterized in that it consists of bringing the ethane into contact with the catalyst containing Mo, Te, V, Nb and at least a fifth element A which is selected from Cu, Ta, Sn, Se, W, Ti, Fe, Co, Ni, Cr, Zr, Sb, Bi, an alkali metal, an alkaline-earth metal and a rare earth, in which at least Mo, Te, V and Nb are present in the form of at least one oxide, said catalyst presenting, in calcined form, an X-ray diffractogram with more than ten intense diffraction lines, typically, the most intense lines corresponding to diffraction angles 2&#x398; of 7.7&#xb0;&#xb1;0.4, 8.9&#xb0;&#xb1;0.4, 22.1&#xb0;+0.4, 26.6&#xb0;&#xb1;0.4, 26.9&#xb0;&#xb1;0.4, 27.1&#xb0;&#xb1;0.4, 28.1&#xb0;&#xb1;0.4, 31.2&#xb0;&#xb1;0.4, 35.0&#xb0;&#xb1;0.4 and 45.06&#xb0;&#xb1;0.

Method for the oxidative dehydrogenation of ethane

Method of preparing diaminodiphenylmethane and higher homologues thereof from aniline and formaldehyde in the presence of heterogeneous solid acid catalysts selected from (a) delaminated zeolites and/or (b) metal silicate catalysts having an ordered mesoporous pore structure and/or (c) delaminated phyllosilicates.

Process for the production of diaminodiphenylmethane and its higher homologues

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Valencia, Spain

Pablo Botella Asunción