Hydrogenation of 10% aqueous solution of 3-hydroxypropanal (HPA) was adiabatically carried out over cylindrical Ni/SiO2/Al2O3-catalyst pellets ( 0.8 + 5 mm) in a trickle bed ( 76 5200 mm) at 2.6 to 8.0 MPa. The concentration and temperature profiles in the trickle-bed were measured at...
Hofmann H,Zhu X D,Valerius G.Effective Kinetics of 3-Hydroxypropanal Hydrogenation over Ni/SiO2/Al2O3 Catalyst. Chemical Engineering . 1996... XD Zhu,G Valerius,H Hofmann - 《Chemical Engineering & Processing》 被引量: 0发表: 1996年 Deactivation of Ni/SiO 2 /Al 2 O 3 -catalyst in ...
Process for preparation of 1,3-propanediol via hydrogenation of 3-hydroxypropanal[P].US:5786524 1998.Powell Joseph B.,Pledger William R.,et al.Process for preparation of1,3-propanediol via hydrogenation of 3-hydroxypropanal[P].U.S.P,US 5786524,1998....
sodium hydroxide is added to the solution to neutralize any acid therein such that the pH is at least about 5, the neutralized aqueous solution is subjected to hydrogenation to produce a crude 1,3-propanediol mixture which is distilled to produce 1,3-propanediol, water, and reactive heavy comp...
Thomas Hass,Bernd Jaeger,Willi Hofen,et al.Catalytichydrogenation of 3-hydroxypropanal to 1,3-propanediol.US:6342 646. 2002VANHEERTUM R,HAAS T,HOFEN W. Catalytic hydrogenation of 3-hydroxypropanal to 1,3-propanediol[P].US 6342646 2002....
modellinghydrogenation3-hydroxypropanal13-propandioltrickle-bedsA new mathematical model considering mass and heat transfer, intrapartical diffusion, partially wetted catalyst, catalyst geometry and deactivation of catalysts has been developed. For determination of the model parameters, such as effective ...
Thomas H,Bernd J,Willi H,et al.Catalytic hydrogenation of 3-hydroxypropanal to 1,3-propanediol:US,6342646[P].2002-01-29.HAAS , THOMAS ,JAEGER ,et al . Catalytic hydrogenation of 3 - hy2 droxypropanal to 1 ,3 - propanediol [ P ] . US 6 ,342 ,646 ,2002 - 01 - 29....
The present invention provides an improved process for the hydrogenation of 3-hydroxypropanal to 1,3-propanediol which comprises purifying an aqueous solution of 3-hydroxypropanal by contacting said aqueous solution with a purifying agent prior to hydrogenation.JAEGER, BERND...
Strong intraparticle diffusion resistance was observed and the apparent effectiveness factors were measured for the hydrogenation of 3-hydroxypropanal (HPA) to 1,3-propanediol (PD) over Ni/SiO2/Al2O3 catalyst pellets at 45 to 80°C and 2.60 to 5.15 MPa in a stirred reactor with a spinning...
X.D.Zhu,G.Valerius,H.Hofmann.Intrinsic Kinetics of3-Hydroxypropanal Hydrogenation over Ni/SiO2/Al2O3Catalyst.Industrial and Engineering Chemistry Research... XDZV Hofmann - 《Chemical Engineering & Processing Process Intensification》 被引量: 35发表: 1996年 Deactivation of Ni/SiO2/Al2O3-catalyst...