초록 ▼

The reduction of an aqueous solution of a carbohydrate to its polyols using as a catalyst zerovalent ruthenium on a hydrothermally stable support can be further improved using the catalyst resulting from production of zerovalent ruthenium by reduction in hydrogen at a temperature in the range 100°-3

The reduction of an aqueous solution of a carbohydrate to its polyols using as a catalyst zerovalent ruthenium on a hydrothermally stable support can be further improved using the catalyst resulting from production of zerovalent ruthenium by reduction in hydrogen at a temperature in the range 100°-300°C. Reduction of a ruthenium compound to afford zerovalent ruthenium at these lower temperatures affords a more active catalyst.

대표청구항 ▼

In the method of hydrogenating a carbohydrate in aqueous solution to its polyols comprising contacting at hydrogenation conditions a reaction medium consisting essentially of said solution with hydrogen and a catalyst consisting essentially of zerovalent ruthenium dispersed on a hydrothermally stabl

In the method of hydrogenating a carbohydrate in aqueous solution to its polyols comprising contacting at hydrogenation conditions a reaction medium consisting essentially of said solution with hydrogen and a catalyst consisting essentially of zerovalent ruthenium dispersed on a hydrothermally stable support, the improvement wherein the zerovalent ruthenium is produced by reduction of a ruthenium impregnate with hydrogen at a temperature from about 100°C. to about 300°C.