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1. (US20170016179) CATALYTIC BIOMASS CONVERSION

Office : United States of America
Application Number: 15180845 Application Date: 13.06.2016
Publication Number: 20170016179 Publication Date: 19.01.2017
Publication Kind : A1
IPC:
D21C 3/22
C08B 15/08
B01J 37/12
B01J 37/03
D21C 9/16
B01J 23/889
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
3
Pulping cellulose-containing materials
22
Other features of pulping processes
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
B
POLYSACCHARIDES; DERIVATIVES THEREOF
15
Preparation of other cellulose derivatives or modified cellulose
08
Fractionation of cellulose, e.g. separation of cellulose crystallites
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37
Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
12
Oxidising
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37
Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02
Impregnation, coating or precipitation
03
Precipitation; Co-precipitation
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9
After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
10
Bleaching
16
with per compounds
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23
Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/113
70
of the iron group metals or copper
76
combined with metals, oxides or hydroxides provided for in groups B01J23/02-B01J23/36118
84
with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
889
Manganese, technetium or rhenium
CPC:
D21C 3/222
D21C 9/163
B01J 23/8892
B01J 37/12
B01J 37/031
C08B 15/08
Applicants: NANO-GREEN BIOREFINERIES INC.
Inventors: Andrew A. OLKOWSKI
Bernard LAARVELD
Norman ARRISON
Priority Data:
Title: (EN) CATALYTIC BIOMASS CONVERSION
Abstract: front page image
(EN)

A biorefining method of processing a lignocellulosic biomass to separate lignin and hemicellulose from cellulose includes the steps of (a) reacting the biomass in an aqueous slurry having a pH less than 7, comprising a transition metal catalyst, hydrogen peroxide; and (b)

separating a solid cellulose fraction from dissolved lignin and hemicellulose fractions. The method may also be used to treat cellulose and produce microcrystalline or nanocrystalline cellulose. The transition metal catalyst may be a nanoparticulate catalyst including multivalent iron, iron oxides and iron hydroxides. The nanoparticulate catalyst may be formed by oxidizing a highly reduced solution of iron, such as groundwater that has not been exposed to oxygen.