Works (32)

Updated: July 5th, 2023 16:04

2008 journal article

Soda-AQ delignification of poplar wood. Part 1: Reaction mechanism and pulp properties

HOLZFORSCHUNG, 62(6), 627–636.

By: A. Venica n, C. Chen n & J. Gratzl n

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: coniferyl alcohol; delignification; flow-through reactor; Grob-type fragmentation; low molecular weight products; poplar wood; reaction mechanisms; sinapyl alcohol; soda-AQ pulping; soda pulping
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Soda-AQ delignification of poplar wood. Part 2: Further degradation of initially dissolved lignins

HOLZFORSCHUNG, 62(6), 637–644.

By: A. Venica n, C. Chen n & J. Gratzl n

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: carbohydrates; delignification; deposition of xylans on fibers; nitrobenzene oxidation; permanganate oxidation; poplar wood; reactions of lignin fragments; soda-AQ pulping
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Oxidative ammonolysis of technical lignins. Part 4. Effects of the ammonium hydroxide concentration and pH

JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY, 26(1), 95–109.

By: E. Capanema n, M. Balakshin n, C. Chen n & J. Gratzl n

co-author countries: Brazil πŸ‡§πŸ‡· United States of America πŸ‡ΊπŸ‡Έ
author keywords: technical lignins; oxidative ammonolysis; kinetics of ammonium hydroxide concentration
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Dechlorination of chlorophenols found in pulp bleach plant E-1 effluents by advanced oxidation processes

BIORESOURCE TECHNOLOGY, 96(8), 897–906.

By: R. Wang n, C. Chen n & J. Gratzl n

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: chlorinated phenols; advanced oxidation processes; UV-photolysis; dechlorination; kinetics; oxygen; hydrogen peroxide; ozone
MeSH headings : Chlorophenols / chemistry; Hydrogen Peroxide / chemistry; Industrial Waste; Kinetics; Oxidants / chemistry; Oxidants, Photochemical / chemistry; Oxidation-Reduction; Ozone / chemistry; Paper; Photochemistry; Water Purification / methods
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Dechlorination of pulp bleaching plant E-1 effluent by ArF* and KrF* excirner laser photolysis. Part 1. Dechlorination of chlorophenols identified in E-1 effluent

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 172(3), 222–230.

By: T. Xie  n, C. Chen n & J. Gratzl n

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: pulp bleaching plant E-1 effluent; advanced oxidation processes; ArF* and KrF* eximer laser photolyses; 193 and 248 nm photons; dechlorination; oxygen; hydrogen peroxide; kinetics
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Dechlorination of pulp bleaching plant E-1 effluent by ArF* and KrF* excirner laser photolysis. Part 2. Dechlorination of polychlorinated oxylignins

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 172(3), 231–240.

By: T. Xie, C. Chen* & J. Gratzl*

author keywords: pulp bleaching plant E-1 effluent; polychlorinated oxylignins; ultrafiltration; advanced oxidation processes; ArF* (193 nm) eximer laser photolysis; decolorization; dechlorination; oxygen; hydrogen peroxide; kinetics
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Dechlorination and decolorization of chloro-organics, in pulp bleach plant E-1 effluents, by advanced oxidation processes

Bioresource Technology, 94(3), 267–274.

By: R. Wang, C. Chen & J. Gratzl

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Ozonation of pine kraft lignin in alkaline solution. Part 1: Ozonation, characterization of kraft lignin and its ozonated preparations

HOLZFORSCHUNG, 58(6), 622–630.

By: R. Wang n, C. Chen n & J. Gratzl n

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: chemical composition; functional group analysis; molecular mass distribution; nitrobenzene-potassium permanganate oxidation; ozonation in alkaline solution; pine kraft lignin; reaction mechanisms; ultrafiltration
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Ozonation of pine kraft lignin in alkaline solution. Part 2: Surface active properties of the ozonated kraft lignins

HOLZFORSCHUNG, 58(6), 631–639.

By: R. Wang n, C. Chen n & J. Gratzl n

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: interfacial tension; Gibbs adsorption equation for dilute solution; ozonated kraft lignins; surface tension
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Comparative studies on oxidation of lignin model compounds with hydrogen peroxide using Mn(IV)-Me(3)TACN and Mn(IV)-Me4DTNE as catalyst

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 206(1-2), 37–51.

By: V. Alves n, E. Capanema n, C. Chen n & J. Gratzl n

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: lignin model compounds; binucleus Mn(IV) complexes; oxidation; hydrogen peroxide; catalysis; reaction kinetics; reaction mechanisms; catalytic cycle; epoxidation of conjugated double bonds
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Oxidative ammonolysis of technical lignins - Part 3. Effect of temperature on the reaction rate

HOLZFORSCHUNG, 56(4), 402–415.

By: E. Capanema*, M. Balakshin*, C. Chen*, J. Gratzl* & A. Kirkman*

author keywords: technical lignins; oxidative ammonolysis of lignins; kinetics of ammonolysis; effect of temperature; nitrogen incorporation; lignin solubiliztion
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Biobleaching of pulp with dioxygen in laccase-mediator system - effect of variables on the reaction kinetics

JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC, 16(3-4), 205–215.

By: M. Balakshin n, C. Chen n, J. Gratzl n, A. Kirkman n & H. Jakob*

co-author countries: Germany πŸ‡©πŸ‡ͺ United States of America πŸ‡ΊπŸ‡Έ
author keywords: Coriolus laccase; laccase-mediator system (LMS); biobleaching of pulp; totally chlorine free bleaching; kinetics; delignification; oxidation; dioxygen uptake
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Biobleaching of pulp with dioxygen in the laccase-mediator system - reaction mechanisms for degradation of residual lignin

JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC, 13(1-3), 1–16.

By: M. Balakshin n, E. Capanema n, C. Chen n, J. Gratzl n, A. Kirkman n & H. Gracz n

co-author countries: Brazil πŸ‡§πŸ‡· United States of America πŸ‡ΊπŸ‡Έ
author keywords: pine Kraft-AQ pulp; biobleaching; dioxygen; laccase-mediator system (LMS); residual lignin; alkaline soluble lignins; changes in structures of lignins; reaction mechanisms
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Oxidative ammonolysis of technical lignins - Part 1. Kinetics of the reaction under isothermal condition at 130 degrees C

HOLZFORSCHUNG, 55(4), 397–404.

By: E. Capanema*, M. Balakshin*, C. Chen*, J. Gratzl* & A. Kirkman*

author keywords: technical lignins; oxidative ammonolysis; kinetics; isothermal condition; composition of N-modified lignins
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Oxidative ammonolysis of technical lignins - Part 2. Effect of oxygen pressure

HOLZFORSCHUNG, 55(4), 405–412.

By: E. Capanema*, M. Balakshin*, C. Chen*, J. Gratzl* & A. Kirkman*

author keywords: technical lignins; oxidative ammonolysis; kinetics; oxygen; composition of N-modified lignins
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Structural analysis of residual and technical lignins by H-1-C-13 correlation 2D NMR-spectroscopy

HOLZFORSCHUNG, 55(3), 302–308.

By: E. Capanema, M. Balakshin*, C. Chen*, J. Gratzl* & H. Gracz*

author keywords: technical lignin; residual lignin; 2D NMR spectra; diarylmethane structure
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Biobleaching of pulp with dioxygen in the laccase-mediator system. Part 1. Kinetics of delignification

HOLZFORSCHUNG, 54(4), 390–396.

By: M. Balakskin, C. Chen*, J. Gratzl*, A. Kirkman* & H. Jakob

author keywords: biobleaching; totally chlorine free bleaching; laccase-mediator system (LMS); kinetics; delignification; oxidation; dioxygen uptake; multi-LMS bleaching process
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Chemistry of pulping: Lignin reactions

Lignin: Historical, Biological, and Materials Perspectives, 742, 392–421.

By: J. Gratzl & C. Chen

Ed(s): R. W. G. Glasser & T. Schultz

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Confirmation of the presence of formaldehyde and N-(methylene)morpholinium cations as reactive species in the cellulose/NMMO/water system by trapping reactions

HOLZFORSCHUNG, 54(1), 101–103.

By: A. Potthast, T. Rosenau, P. Kosma, C. Chen* & J. Gratzl*

author keywords: N-methylmorpholine-N-oxide; cellulose; carbenium-iminium ions; formaldehyde; trapping reactions
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Kinetic studies on oxidation of veratryl alcohol by laccase-mediator system - Part 1. Effects of mediator concentration

HOLZFORSCHUNG, 54(2), 165–170.

By: M. Balakshin*, C. Chen*, J. Gratzl*, A. Kirkman* & H. Jakob

author keywords: laccase; ABTS; veratryl alcohol; oxidation; kinetics
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Kinetic studies on oxidation of veratryl alcohol by laccase-mediator system. Part 2. The kinetics of dioxygen uptake

HOLZFORSCHUNG, 54(2), 171–175.

By: M. Balakshin*, C. Chen*, J. Gratzl*, A. Kirkman* & H. Jakob

author keywords: laccase; ABTS; veratryl alcohol; dioxygen; LMS; oxidation; kinetics
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Kinetic study on delignification of kraft-AQ pine pulp with hydrogen peroxide catalyzed by Mn(IV)-Me4DTNE

HOLZFORSCHUNG, 54(4), 413–419.

By: Y. Cui, P. Puthson, C. Chen*, J. Gratzl* & A. Kirkman*

author keywords: pine kraft pulp; binuclear Mn(IV) complex; hydrogen peroxide; Mn(IV)-Me4DTNE-catalyzed bleaching of pulp; oxidation of residual lignin; delignification kinetics; brightness of bleached pulp; viscosity of bleached pulp
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Laccase-catalyzed oxidation of 1-(3,4-dimethoxyphenyl)-1-propene using ABTS as mediator

JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC, 8(4-6), 213–219.

By: C. Chen n, A. Potthast  n, T. Rosenau  n, J. Gratzl n, A. Kirkman n, D. Nagai *, T. Miyakoshi*

co-author countries: Japan πŸ‡―πŸ‡΅ United States of America πŸ‡ΊπŸ‡Έ
author keywords: fungal laccases; enzyme-catalyzed oxidation; 1-(3,4-dimethoxyphenyl)-1-propene; laccase-mediator system
Source: Web Of Science
Added: August 6, 2018

1999 journal article

A Mn(IV)-Me4DTNE complex catalyzed oxidation of lignin model compounds with hydrogen peroxide

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 144(3), 411–417.

By: Y. Cui, C. Chen n, J. Gratzl n & R. Patt*

co-author countries: Germany πŸ‡©πŸ‡ͺ United States of America πŸ‡ΊπŸ‡Έ
author keywords: Mn complexes; catalysis; hydrogen peroxide; oxidation; lignin model compounds
Source: Web Of Science
Added: August 6, 2018

1999 personal communication

Autocatalytic decomposition of N-methylmorpholine N-oxide induced by Mannich intermediates

By: T. Rosenau, A. Potthast, P. Kosma, C. Chen & J. Gratzl

Source: NC State University Libraries
Added: August 6, 2018

1999 patent

Selective enzymatic oxidation of aromatic methyl groups to aldehydes by oxygen in the presence of a laccase-mediator catalyst

Washington, DC: U.S. Patent and Trademark Office.

By: C. Chen, J. Gratzl, A. Kirkman, A. Potthast & T. Rosenau

Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

Reactions of lignin with cyanamide activated hydrogen peroxide Part 1. The degradation of lignin model compounds

HOLZFORSCHUNG, 52(5), 506–512.

By: J. Kadla*, P. Chang, C. Chen* & J. Gratzl*

author keywords: hydrogen peroxide; cyanamide; peroxyimidic acid; superoxide anion radical; lignin model compound
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Reactions of lignin with cyanamide activated hydrogen peroxide Part 2. The degradation mechanism of phenolic lignin model compounds

HOLZFORSCHUNG, 52(5), 513–520.

By: J. Kadla*, H. Chang*, C. Chen* & J. Gratzl*

author keywords: hydrogen peroxide; cyanamide; mechanisms; lignin model compounds; superoxide anion radical
Source: Web Of Science
Added: August 6, 2018

1997 journal article

Sonolysis of chloro-organics in bleach plant E-1 effluents

HOLZFORSCHUNG, 51(5), 452–458.

By: Y. Uraki, C. Chen* & J. Gratzl*

author keywords: sonolysis; acoustic cavitation; 4-chlorophenol; 2,4,6-trichlorophenol; polychlorinated oxylignin; chlorine bleaching; E-1 effluents; kinetics; dechlorination
Source: Web Of Science
Added: August 6, 2018

1991 patent

Two stage process for the oxygen delignification of lignocellulosic fibers with peroxide reinforcement in the first stage

Washington, DC: U.S. Patent and Trademark Office.

By: V. Parthasarathy, M. Sundaram, H. Jameel, J. Gratzl & R. Klein

Source: NC State University Libraries
Added: August 6, 2018

1989 patent

Process for delignification of cellulosic substances by pretreating with a complexing agent followed by peroxide prior to kraft digestion

Washington, DC: U.S. Patent and Trademark Office.

By: J. Gratzl

Source: NC State University Libraries
Added: August 6, 2018

1989 patent

Process for the delignification of cellulosic substances by pretreating with a complexing agent followed by hydrogen peroxide

Washington, DC: U.S. Patent and Trademark Office.

By: J. Gratzl

Source: NC State University Libraries
Added: August 6, 2018

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