Furanix Technologies B.v.

Synvina C.v.

Etienne Mazoyer

Ana Sofia Vagueiro De Sousa Dias

Gerardus Johannes Maria Gruter

Johannes Maria Franciscus Sijben

David L Sikkenga

Jan Cornelis Van Der Waal

Benjamin McKay

Victor Peter Charles Vreeken

Hendrikus Jacob Baars

David Lee Sikkenga

Benjamin Mckay

A furfural derivative having the chemical formula (1) wherein R represents hydrogen, an alkyl group or an acyl group, is prepared in a process, which process includes reacting a fructose- and/or glucose-containing starting material with a liquid hydroxyl group-containing compound of formula R&#x2014;OH in the presence of an acid catalyst at a reaction temperature in the range of 150 to 300&#xb0; C. to produce an acid reaction mixture including the furfural derivative of chemical formula (1), which acid reaction mixture has a pH-value of smaller than 3; neutralizing the acid reaction mixture to a pH-value in the range of 3 to 6.5 to provide a partially neutralized reaction mixture; and purifying the partially neutralized reaction mixture to recover the furfural derivative of chemical formula (1).

Process for the preparation of a furfural derivative

A furfural derivative having the chemical formula (1) where R represents hydrogen, an alkyl group or an acyl group, is prepared in a process, which process includes reacting a fructose- and/or glucose-containing starting material with a liquid hydroxyl group-containing compound of formula R&#x2014;OH in the presence of an acid catalyst at a reaction temperature in the range of 150 to 300&#xb0; C. to produce a primary acid reaction mixture including the furfural derivative of chemical formula (1); separating part of the liquid hydroxyl group-containing compound from the primary acid reaction mixture to yield a secondary acid reaction mixture; neutralizing the secondary acid reaction mixture to a pH-value of at least 3 to obtain a neutralized reaction mixture; and purifying the neutralized reaction mixture to recover the furfural derivative of chemical formula (1).

Process for the preparation of a furfural derivative comprising neutralizing an acid reaction mixture

2,5-Furandicarboxylic acid and methyl acetate are prepared in a continuous process by introducing a 5-methoxymethylfurfural-containing feedstock, an oxygen-containing gas, an oxidation catalyst and an acetic acid-containing solvent into a reactor; allowing 5-methoxymethylfurfural to react with oxygen and acetic acid in the presence of the oxidation catalyst to yield 2,5-furandicarboxylic acid as main product and methyl acetate; withdrawing 2,5-furandicarboxylic acid-containing product from the reactor and recovering 2,5-furandicarboxylic acid product; and withdrawing a vaporous stream containing methyl acetate from the reactor.

Process for the preparation of 2,5-furan-dicarboxylic acid

In a process for carrying out a reaction, a liquid reaction mixture is contacted with a catalyst that includes silica and/or a silicate, in which process a silicon compound that is soluble in the liquid reaction mixture is added to the reaction mixture before being contacted with the catalyst. The aqueous reaction mixture suitably contains water, an alcohol or a mixture thereof.

Process for carrying out a reaction involving a liquid reaction mixture

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Amsterdam, Netherlands

Etienne Mazoyer