@article {1418,
	title = {A new class of bleaching and brightness stabilizing agents. Part III: Brightness stabilization of mechanical pulps},
	journal = {Journal of Pulp and Paper Science},
	volume = {32},
	number = {3},
	year = {2006},
	note = {ISI Document Delivery No.: 101XNTimes Cited: 8Cited Reference Count: 29Hu, T. Q. James, B. R. Yawalata, D. Ezhova, M. B.},
	month = {Jul-Sep},
	pages = {131-136},
	type = {Article},
	abstract = {Recently, we discovered that water-soluble tertiary hydroxyalkyl phosphines and quaternary hydroxymethyl phosphonium salts were capable of providing a bleaching effect similar to or higher than that achievable with hydrosulphite on mechanical pulps over a wide range of pH, consistency and temperature. Now, we have found that mechanical pulps bleached with these phosphorus (P) compounds are more stable than those bleached with hydrosulphite, not only when exposed to heat and moisture, but also during ambient dark storage. One of the P compounds, tris(hydroxypropyl)phosphine (THPP), P(CH2CH2CH2OH)(3), is also effective in providing additional brightness gains to, and in improving the light stability of papers made from peroxide-bleached mechanical pulps.},
	keywords = {bleached pulps, bleaching, brightness, HIGH-YIELD PULPS, LIGHT, mechanical pulps, PAPER, phosphorus compounds, REVERSION, stabilizers, YELLOWING INHIBITOR},
	isbn = {0826-6220},
	url = {<Go to ISI>://000241774700003},
	author = {Hu, Thomas Q. and James, Brian R. and Yawalata, D. and Ezhova, M. B.}
}
@article {1418,
	title = {A new class of bleaching and brightness stabilizing agents. Part III: Brightness stabilization of mechanical pulps},
	journal = {Journal of Pulp and Paper Science},
	volume = {32},
	number = {3},
	year = {2006},
	note = {ISI Document Delivery No.: 101XNTimes Cited: 8Cited Reference Count: 29Hu, T. Q. James, B. R. Yawalata, D. Ezhova, M. B.},
	month = {Jul-Sep},
	pages = {131-136},
	type = {Article},
	abstract = {Recently, we discovered that water-soluble tertiary hydroxyalkyl phosphines and quaternary hydroxymethyl phosphonium salts were capable of providing a bleaching effect similar to or higher than that achievable with hydrosulphite on mechanical pulps over a wide range of pH, consistency and temperature. Now, we have found that mechanical pulps bleached with these phosphorus (P) compounds are more stable than those bleached with hydrosulphite, not only when exposed to heat and moisture, but also during ambient dark storage. One of the P compounds, tris(hydroxypropyl)phosphine (THPP), P(CH2CH2CH2OH)(3), is also effective in providing additional brightness gains to, and in improving the light stability of papers made from peroxide-bleached mechanical pulps.},
	keywords = {bleached pulps, bleaching, brightness, HIGH-YIELD PULPS, LIGHT, mechanical pulps, PAPER, phosphorus compounds, REVERSION, stabilizers, YELLOWING INHIBITOR},
	isbn = {0826-6220},
	url = {<Go to ISI>://000241774700003},
	author = {Hu, Thomas Q. and James, Brian R. and Yawalata, D. and Ezhova, M. B.}
}
@article {5136,
	title = {Tetrazole ethers from lignin model phenols: synthesis, crystal structures, and photostability},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {79},
	number = {8},
	year = {2001},
	note = {ISI Document Delivery No.: 473WGTimes Cited: 1Cited Reference Count: 24},
	month = {Aug},
	pages = {1201-1206},
	type = {Article},
	abstract = {{The phenolic OH moiety in lignin is one of the key functional groups responsible for the photo-induced yellowing of mechanical wood pulps and papers. To evaluate new protective groups for the stabilization of lignin phenols, the model compounds, 2-methoxy-4-propylphenol (1) and 4-hydroxy-3-methoxyacetophenone (2) were reacted with 5-chloro-1-phenyl-1H-tetrazole to give the corresponding tetrazole ethers 1{\textquoteright} and 2{\textquoteright}, respectively, that were then studied for their photostability. The synthesis of these ethers was more efficient than that of alkyl ethers because of less hydrolysis of the alkylating agent under the reaction conditions. Compounds 1{\textquoteright} and 2{\textquoteright} were fully characterized, including X-ray crystal structure analyses. Crystals of 1{\textquoteright} and 2{\textquoteright} were monoclinic of space groups P2(1)/c and P2(1)/a, respectively. For 1{\textquoteright}: a = 9.8679(6)},
	keywords = {ALKYLATION, ETHERS, HIGH-YIELD PULPS, LIGHT, LIGNIN MODEL COMPOUNDS, METHYLATION, PHENOLS, yellowing inhibition},
	isbn = {0008-4042},
	url = {<Go to ISI>://000171071400001},
	author = {Lu, A. Z. and Hu, Thomas Q. and Osmond, D. A. and Patrick, B. O. and James, Brian R.}
}
@article {5136,
	title = {Tetrazole ethers from lignin model phenols: synthesis, crystal structures, and photostability},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {79},
	number = {8},
	year = {2001},
	note = {ISI Document Delivery No.: 473WGTimes Cited: 1Cited Reference Count: 24},
	month = {Aug},
	pages = {1201-1206},
	type = {Article},
	abstract = {{The phenolic OH moiety in lignin is one of the key functional groups responsible for the photo-induced yellowing of mechanical wood pulps and papers. To evaluate new protective groups for the stabilization of lignin phenols, the model compounds, 2-methoxy-4-propylphenol (1) and 4-hydroxy-3-methoxyacetophenone (2) were reacted with 5-chloro-1-phenyl-1H-tetrazole to give the corresponding tetrazole ethers 1{\textquoteright} and 2{\textquoteright}, respectively, that were then studied for their photostability. The synthesis of these ethers was more efficient than that of alkyl ethers because of less hydrolysis of the alkylating agent under the reaction conditions. Compounds 1{\textquoteright} and 2{\textquoteright} were fully characterized, including X-ray crystal structure analyses. Crystals of 1{\textquoteright} and 2{\textquoteright} were monoclinic of space groups P2(1)/c and P2(1)/a, respectively. For 1{\textquoteright}: a = 9.8679(6)},
	keywords = {ALKYLATION, ETHERS, HIGH-YIELD PULPS, LIGHT, LIGNIN MODEL COMPOUNDS, METHYLATION, PHENOLS, yellowing inhibition},
	isbn = {0008-4042},
	url = {<Go to ISI>://000171071400001},
	author = {Lu, A. Z. and Hu, Thomas Q. and Osmond, D. A. and Patrick, B. O. and James, Brian R.}
}
@article {4001,
	title = {Towards inhibition of yellowing of mechanical pulps .2. Water-soluble catalysts for the hydrogenation of lignin model compounds},
	journal = {Journal of Pulp and Paper Science},
	volume = {23},
	number = {5},
	year = {1997},
	note = {ISI Document Delivery No.: WY102Times Cited: 18Cited Reference Count: 32},
	month = {May},
	pages = {J200-J205},
	type = {Article},
	abstract = {Water-soluble, polymer-stabilized, colloidal rhodium is an effective catalyst for the hydrogenation of the aromatic rings of the lignin model compounds 4-propylphenol, 2-methoxy-4-propylphenol, and 1,2-dimethoxy-4-propylbenzene under extremely mild conditions (25 degrees C, 1 atm H-2) in a one-phase, aqueous ethanol medium. The water-soluble catalyst is prepared by reducing rhodium trichloride trihydrate with ethanol in the presence of polyvinylpyrrolidone (PVP) and triethylamine, The reactivity of various chromophore precursors in lignin toward hydrogenation catalyzed by water-soluble, colloidal rhodium follows the descending order of carbon-carbon double bond > aromatic ring in 4-propylphenol > carbonyl group and the aromatic rings in 2-methoxy-4-propylphenol and 1,2-dimethoxy-4-propylbenzene, The hydrogenation of 2-methoxy-4-propylphenol and 1,2-dimethoxy-4-propylbenzene is accompanied by some hydrogenolysis and removal of the OMe group.},
	keywords = {aromatic compounds, aromatic groups, CARBON-MONOXIDE, CARBONYL, CATALYSTS, CHROMOPHORES, CLUSTERS, colloids, GROUPS, HIGH-YIELD PULPS, HYDROGENATION, HYDROGENOLYSIS, INHIBITION, LIGNIN, mechanical pulps, model compounds, water solubles, yellowing},
	isbn = {0826-6220},
	url = {<Go to ISI>://A1997WY10200002},
	author = {Hu, Thomas Q. and James, Brian R. and Lee, C. L.}
}
@article {4001,
	title = {Towards inhibition of yellowing of mechanical pulps .2. Water-soluble catalysts for the hydrogenation of lignin model compounds},
	journal = {Journal of Pulp and Paper Science},
	volume = {23},
	number = {5},
	year = {1997},
	note = {ISI Document Delivery No.: WY102Times Cited: 18Cited Reference Count: 32},
	month = {May},
	pages = {J200-J205},
	type = {Article},
	abstract = {Water-soluble, polymer-stabilized, colloidal rhodium is an effective catalyst for the hydrogenation of the aromatic rings of the lignin model compounds 4-propylphenol, 2-methoxy-4-propylphenol, and 1,2-dimethoxy-4-propylbenzene under extremely mild conditions (25 degrees C, 1 atm H-2) in a one-phase, aqueous ethanol medium. The water-soluble catalyst is prepared by reducing rhodium trichloride trihydrate with ethanol in the presence of polyvinylpyrrolidone (PVP) and triethylamine, The reactivity of various chromophore precursors in lignin toward hydrogenation catalyzed by water-soluble, colloidal rhodium follows the descending order of carbon-carbon double bond > aromatic ring in 4-propylphenol > carbonyl group and the aromatic rings in 2-methoxy-4-propylphenol and 1,2-dimethoxy-4-propylbenzene, The hydrogenation of 2-methoxy-4-propylphenol and 1,2-dimethoxy-4-propylbenzene is accompanied by some hydrogenolysis and removal of the OMe group.},
	keywords = {aromatic compounds, aromatic groups, CARBON-MONOXIDE, CARBONYL, CATALYSTS, CHROMOPHORES, CLUSTERS, colloids, GROUPS, HIGH-YIELD PULPS, HYDROGENATION, HYDROGENOLYSIS, INHIBITION, LIGNIN, mechanical pulps, model compounds, water solubles, yellowing},
	isbn = {0826-6220},
	url = {<Go to ISI>://A1997WY10200002},
	author = {Hu, Thomas Q. and James, Brian R. and Lee, C. L.}
}
