Catalysts And Processes For The Production Of Aromatic Compounds From Lignin
AssigneeThe Procter & Gamble Company
InventorsPatti Jean Kellett, Dimitris Ioannis Collias
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Abstract
Hydrotreating catalysts and processes useful for the conversion of methoxylated aromatic compounds to simple aromatic compounds are provided. The catalysts comprise transition metal selected from the group consisting of Group 8 metals, Group 9 metals, Group 10 metals, Group 11 metals, and mixtures thereof, and catalyst support selected from the group consisting of shape-selective zeolite, silica, titania, zirconia, and mixtures thereof.
Claims25
A process for converting methoxylated aromatic compounds and compositions comprising methoxylated aromatic compounds to simple aromatic compounds comprising:
- a. contacting said methoxylated aromatic compounds and said compositions comprising methoxylated aromatic compounds with a catalyst and hydrogen in a reactor;
- and
- b. removing simple aromatic compounds from said reactor;
- wherein said catalyst comprises:
- i. a transition metal selected from the group consisting of Group 8 metals, Group 9 metals, Group 10 metals, Group 11 metals, and mixtures thereof;
- and
- ii. a catalyst support selected from the group consisting of silica, titania, zirconia, shape-selective zeolite, and mixtures thereof.
The process of claim 20, wherein said reactor has an operating pressure and said operating pressure is between about 150 psig and about 500 psig.
A process for the conversion of methoxylated aromatic compounds and compositions comprising methoxylated aromatic compounds to simple aromatic compounds comprising:
- a. contacting said methoxylated aromatic compounds and said compositions comprising methoxylated aromatic compounds with a catalyst and hydrogen in a reactor;
- and
- b. removing simple aromatic compounds from said reactor;
- wherein said catalyst comprises:
- i. a transition metal selected from the group consisting of Group 8 metals, Group 9 metals, Group 10 metals, Group 11 metals, and mixtures thereof;
- ii. a promoter metal;
- and
- iii. an alumina catalyst support.
A process for the conversion of a composition of depolymerized lignin to simple aromatic compounds comprising contacting said composition of depolymerized lignin with a catalyst and about 32 molar equivalents of hydrogen in a flow reactor, wherein said catalyst comprises Ni deposited onto ferrierite zeolite;
- and wherein said flow reactor has a temperature of about 350° C., a pressure of about 370 psig, and an LHSV of about 3 h−1.
A process for the conversion of lignin to BTX comprising the steps of:
- a) depolymerizing said lignin to produce a depolymerized lignin composition;
- b) hydrotreating said depolymerized lignin composition to produce simple aromatic compounds;
- and
- c) aromatic dealkylating said simple aromatic compounds to produce said BTX.
Dependencies are inferred from the claim text.