The invention provides a process for the catalytic conversion of a saccharide-containing feedstock in a reactor, wherein saccharide-containing feedstock is provided to the reactor as a feed stream through a feed pipe and is contacted with a catalyst system in the reactor and wherein, as the saccharide-containing feedstock is fed through the feed pipe, a solvent stream, initially comprising essentially no saccharide, is fed along the internal walls of the feed pipe.

The invention provides a process for the catalytic conversion of a saccharide-containing feedstock in a reactor, wherein saccharide-containing feedstock is provided to the reactor as a feed stream through a feed pipe and is contacted with a catalyst system in the reactor and wherein, as the saccharide-containing feedstock is fed through the feed pipe, a solvent stream, initially comprising essentially no saccharide, is fed along the internal walls of the feed pipe.

The invention provides a shut down method for a process for the preparation of glycols from a starting material comprising one or more saccharides in the presence 5 of hydrogen and a catalyst system comprising one or more retro-aldol catalysts comprising tungsten and one or more catalytic species suitable for hydrogenation in a reactor, said method comprising removing the one or more retro-aldol catalysts from the reactor whilst also in the presence of one or more agents suitable to suppress tungsten precipitation.

The invention provides a shut down method for a process for the preparation of glycols from a starting material comprising one or more saccharides in the presence 5 of hydrogen and a catalyst system comprising one or more retro-aldol catalysts comprising tungsten and one or more catalytic species suitable for hydrogenation in a reactor, said method comprising removing the one or more retro-aldol catalysts from the reactor whilst also in the presence of one or more agents suitable to suppress tungsten precipitation.

The invention provides a shut down method for a process for the preparation of glycols from a starting material comprising one or more saccharides in the presence 5 of hydrogen and a catalyst system comprising one or more retro-aldol catalysts comprising tungsten and one or more catalytic species suitable for hydrogenation in a reactor, said method comprising removing the one or more retro-aldol catalysts from the reactor whilst also in the presence of one or more agents suitable to suppress tungsten precipitation.

Method for treating production wastewater from the preparation of propylene oxide by co-oxidation. The wastewater includes a first portion of wastewater having a peroxide content of 2000 mg/L or more and a second portion of wastewater having a peroxide content of 50 mg/L or less.

Method for treating production wastewater from the preparation of propylene oxide by co-oxidation. The wastewater includes a first portion of wastewater having a peroxide content of 2000 mg/L or more and a second portion of wastewater having a peroxide content of 50 mg/L or less.

Process for the manufacture of at least one alcohol and/or at least one ketone, which comprises a step during which at least one organic peroxide compound is put into contact with at least one catalyst responding to formula (I) CrN.sub.xO.sub.y Formula (I) in which x is a number varying from 0.10 to 1.00 and y is a number varying from 0.00 to 1.50, in order to produce the at least one alcohol and/or at least one ketone.

Process for the manufacture of at least one alcohol and/or at least one ketone, which comprises a step during which at least one organic peroxide compound is put into contact with at least one catalyst responding to formula (I) CrN.sub.xO.sub.y Formula (I) in which x is a number varying from 0.10 to 1.00 and y is a number varying from 0.00 to 1.50, in order to produce the at least one alcohol and/or at least one ketone.

An anode for oxygen evolution that operates at a small overpotential and in a stable manner, and can be used favorably in an organic chemical hydride electrolytic synthesis apparatus.

An anode 10 for oxygen evolution that evolves oxygen in a sulfuric acid aqueous solution containing a substance to be hydrogenated dissolved at a concentration higher than 1 mg/L, wherein an anode substrate 10a is composed of a valve metal, and an anode catalyst layer 10b containing at least one oxide, nitride or carbide of iridium, and at least one oxide, nitride or carbide of at least one metal selected from the group consisting of elements belonging to groups 4, 5 and 13 of the periodic table is formed on the surface of the anode substrate 10a.