FIELD: hydrogenation-dehydrogenation catalysts.
SUBSTANCE: invention relates to novel ruthenium catalysts, method for preparation thereof, and to employment thereof for catalytic hydrogenation of mono- and oligosaccharides in production of corresponding sugar alcohols. Ruthenium hydrogenation catalyst contains ruthenium supported by amorphous silica-based carrier, content of ruthenium being 0.2 to 7% of the weight of carrier, while carrier contains at least 90% silica and less than 10% of crystalline silicon dioxide phases. Catalyst is prepared by single or multiple treatment of carrier material with halogen-free solution of low-molecular weight ruthenium compound and subsequent drying of treated material at temperature not lower than 200°C immediately followed by reduction of dried material with hydrogen at 100 to 350°C. Herein disclosed is also a process for liquid-phase production of sugar alcohols (excepting sorbitol) via catalytic hydrogenation of corresponding mono- and oligosaccharides in presence of proposed catalysts.
EFFECT: increased activity and selectivity of catalysts.
16 cl, 4 tbl, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF HYDROGENATING BENZENE, MIXTURE OF BENZENE AND TOLUENE, MIXTURE OF BENZENE AND XYLENE OR ISOMERIC MIXTURE OF XYLENE OR MIXTURE OF BENZENE, TOLUENE AND XYLENE OR ISOMERIC MIXTURE OF XYLENE, CONTAINING SULPHUR AROMATIC COMPOUNDS AND DESULPHONATION METHOD THEREOF | 2006 |
|
RU2404950C2 |
| AMMONIA SYNTHESIS CATALYST, METHOD OF PREPARATION THEREOF, AND AMMONIA SYNTHESIS PROCESS | 1998 |
|
RU2130337C1 |
| NANOSTRUCTURED CATALYST FOR HYDROGENATION OF AROMATIC HYDROCARBONS C6-C8 | 2019 |
|
RU2696957C1 |
| METHOD OF HYDROGENATION OF AROMATIC COMPOUNDS BY REACTION DISTILLATION | 2001 |
|
RU2277079C2 |
| CATALYST AND METHOD OF MANUFACTURING CHLORINE BY OXIDATION OF HYDROGEN CHLORIDE IN GASEOUS PHASE | 2008 |
|
RU2469790C2 |
| HEAT-RESISTANT CATALYST FOR GAS-PHASE OXIDATION | 2007 |
|
RU2440186C2 |
| METHOD TO PRODUCE AN OXIDIC CATALYST | 1998 |
|
RU2218987C2 |
| CATALYST, METHOD FOR ITS PREPARATION AND METHOD FOR OBTAINING HYDROGEN FROM AMMONIA | 2022 |
|
RU2787379C1 |
| RUTHENIUM OXIDE BASED CATALYST FOR CONVERTING SULPHUR DIOXIDE TO SULPHUR TRIOXIDE | 2006 |
|
RU2422357C2 |
| METHOD OF SYNTHESISING C5+ HYDROCARBONS IN PRESENCE OF CATALYST, OBTAINED BY MEANS OF AT LEAST ONE CYCLIC OLIGOSACCHARIDE | 2011 |
|
RU2561112C2 |
