ONE-STEP HYDRODEOXYGENATION AND REFORMATION OF ALDITOLS
This application provides an efficient method for fuel processing, comprising providing a fluid hydrocarbon fuel feedstock comprising an oxygenate; contacting the feedstock with a catalyst comprising Pt loaded with WO 3 and ZrO 2 in he presence of hydrogen; reacting the feedstock, hydrogen and catalyst at a temperature and a pressure for a period of time sufficient to allow hydrodeoxygenation and hydrocarbon isomerization of one or more oxygenates in the feedstock.
1 . A method for hydrocarbon processing, comprising:
providing a fluid hydrocarbon feedstock comprising an oxygenate;
contacting the feedstock with a catalyst comprising Pt-loaded WO 3 /ZrO 2 in the presence of hydrogen; and
reacting the feedstock, hydrogen and catalyst at a temperature and a pressure for a period of time sufficient to allow both hydrodeoxygenation and hydrocarbon isomerization of said oxygenate.
2 . The method of claim 1 , wherein the fluid hydrocarbon feedstock comprises an aqueous oxygenate stream and a fluid hydrocarbon stream provided substantially simultaneously.
3 . The method of claim 1 , wherein ratio of WO 3 to ZrO 2 is from 1:9 to 2:8.
4 . The method of claim 1 , wherein the catalyst was formed at a calcination temperature of 400° C. to 800° C. for 2 hours to 4 hours, sufficient to increase the tetragonoal zirconia content of the catalyst.
5 . The method of claim 1 , wherein the weight percent of Pt in the catalyst is 0.01 wt % to 10 wt % of the weight of the catalyst.
6 . The method of claim 5 , wherein the weight percent of Pt in the catalyst is 1 wt % to 5 wt % of the weight of the catalyst.
7 . The method of claim 1 , wherein the catalyst is substantially free of sulfide.
8 . The method of claim 1 , wherein the catalyst has an average particle size of 10 μm to 10 mm.
9 . The method of claim 8 , wherein the catalyst has an average particle size of 100 μm to 500 μm.
10 . The method of claim 1 , wherein the catalyst is porous.
11 . The method of claim 1 , further comprising: separating a product from the feedstock, hydrogen and catalyst.
12 . The method of claim 1 , wherein the feedstock is a biofuel.
13 . The method of claim 1 , wherein the oxygenate comprises at least one alditol.
14 . The method of claim 13 , wherein the alditol is selected from the group consisting of erythritol, threitol, arabitol, xylitol, ribitol, sorbitol, iditol, dulcitol, mannitol and mixtures thereof.
15 . The method of claim 1 , wherein the temperature is from 100° C. to 300° C.
16 . The method of claim 15 , wherein the temperature is from 150° C. to 250° C.
17 . The method of claim 1 , wherein the pressure is 800 psig to 2500 psig.
18 . The method of claim 1 , wherein the period of time is from 15 minutes to 5 hours.
19 . A method for hydrodeoxygenation and isomerization of an alditol, comprising:
providing substantially simultaneously a fluid hydrocarbon stream and an aqueous stream comprising at least one alditol;
contacting the streams with a catalyst comprising Pt-loaded WO 3 /ZrO 2 in the presence of hydrogen; and
reacting the streams, hydrogen and catalyst from 100° C. to 300° C. at 800 psig to 2500 psig for 15 minutes to 5 hours sufficient to allow both hydrodeoxygenation and isomerization of the alditol.
20 . The method of claim 15 , wherein the alditol is selected from the group consisting of erythritol, threitol, arabitol, xylitol, ribitol, sorbitol, iditol, dulcitol, mannitol and mixtures thereof.