Preparation of 1,2-propanediol
First Claim
1. A process for the preparation of 1,2-propanediol by catalytic hydrogenation of glycerol at elevated temperature and pressure, which comprises using glycerol having a water content of up to 20% by weight and a catalyst comprising the metals cobalt, copper, manganese and molybdenum in amounts of, based on the total weight of the catalyst,from 40 to 70% by weight of cobalt,from 10 to 20% by weight of copper,from 0 to 10% by weight of manganese andfrom 0 to 10% by weight of molybdenum,where this catalytically active material may additionally contain inorganic polyacids and/or heteropolyacids in an amount of up to 10% by weight, based on the total weight of the catalyst.
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Accused Products
Abstract
A process for the preparation of 1,2-propanediol by catalytic hydrogenation of glycerol at elevated temperature and elevated pressure, which comprises using glycerol having a water content of up to 20% by weight and a catalyst comprising the metals cobalt, copper, manganese and molybdenum in amounts of, based on the total weight of the catalyst,
from 40 to 70% by weight of cobalt,
from 10 to 20% by weight of copper,
from 0 to 10% by weight of manganese and
from 0 to 10% by weight of molybdenum,
where this catalytically active material may additionally contain inorganic polyacids and/or heteropolyacids in an amount of up to 10% by weight, based on the total weight of the catalyst.
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Citations
1 Claim
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1. A process for the preparation of 1,2-propanediol by catalytic hydrogenation of glycerol at elevated temperature and pressure, which comprises using glycerol having a water content of up to 20% by weight and a catalyst comprising the metals cobalt, copper, manganese and molybdenum in amounts of, based on the total weight of the catalyst,
from 40 to 70% by weight of cobalt, from 10 to 20% by weight of copper, from 0 to 10% by weight of manganese and from 0 to 10% by weight of molybdenum, where this catalytically active material may additionally contain inorganic polyacids and/or heteropolyacids in an amount of up to 10% by weight, based on the total weight of the catalyst.
Specification
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- Resources
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Current AssigneeBASF AG (BASF SE), Nishinbo Industries Incorporated, Sanyo Electric Company Limited (Panasonic Holdings Corporation)
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Original AssigneeBASF AG (BASF SE)
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InventorsEggersdorfer, Manfred, Schuster, Ludwig
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Primary Examiner(s)EVANS, JOSEPH
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Application NumberUS08/559,625Time in Patent Office498 DaysField of Search568/861US Class Current568/861CPC Class CodesC07C 29/60 by elimination of -OH group...C07C 31/04 MethanolC07C 31/08 EthanolC07C 31/10 containing three carbon atomsC07C 31/205 1,3-Propanediol; 1,2-Propan...Y02P 20/52 using catalysts, e.g. selec...
