Abstract:
Method for producing solutions which comprise 5-hydroxymethylfurfural (HMF) and have a reduced content of starting materials of the HMF synthesis or a reduced content of by-products of the HMF synthesis (hereinbelow called product solution), which comprises treating solutions which comprise HMF starting materials or by-products of the HMF synthesis and an organic solvent having at least two ether groups (for short polyether) (hereinbelow called starting solution) in an evaporator with steam.
Abstract:
A process for preparing olefins by reaction of carbon monoxide with hydrogen in the presence of a an iron-comprising heterogeneous catalyst produced by the following steps: thermal decomposition of gaseous iron pentacarbonyl to give carbonyl iron powder having spherical primary particles; treatment of carbonyl iron powder with hydrogen, resulting in the metallic spherical primary particles at least partially forming agglomerates; contacting the agglomerates with iron pentacarbonyl; and thermal decomposition of the iron pentacarbonyl to give at least predominantly pore-free and void-free secondary particles.
Abstract:
A process for preparing olefins by reaction of carbon monoxide with hydrogen in the presence of a an iron-comprising heterogeneous catalyst produced by the following steps: thermal decomposition of gaseous iron pentacarbonyl to give carbonyl iron powder having spherical primary particles; treatment of carbonyl iron powder with hydrogen, resulting in the metallic spherical primary particles at least partially forming agglomerates; contacting the agglomerates with iron pentacarbonyl; and thermal decomposition of the iron pentacarbonyl to give at least predominantly pore-free and void-free secondary particles.
Abstract:
Method for producing solutions which comprise 5-hydroxymethylfurfural (HMF) and have a reduced content of starting materials of the HMF synthesis or a reduced content of by-products of the HMF synthesis (hereinbelow called product solution), which comprises treating solutions which comprise HMF starting materials or by-products of the HMF synthesis and an organic solvent having at least two ether groups (for short polyether) (hereinbelow called starting solution) in an evaporator with steam.