Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Leland Roy Schroeder"'
Publikováno v:
Journal of Wood Chemistry and Technology. 26:273-282
In addition to other acid products, degradation of 1,5‐anhydroribitol (5) and 1,5‐anhydroxylitol (6) with oxygen in 1.25 M NaOH produced diastereomeric 1,4‐anhydro‐2‐C‐carboxy‐D‐erythritol (7) and 1,4‐anhydro‐2‐C‐carboxy‐D
Publikováno v:
Journal of Wood Chemistry and Technology. 26:5-20
We observed that the O2 delignification pattern of aspen kraft pulps was distinctly different from that of pine pulps based on a reduction in the apparent pulp kappa number. Much of this phenomenon can be attributed to the variation of the residual e
Publikováno v:
Journal of Wood Chemistry and Technology. 24:139-151
The amount of residual extractives in kraft pulps and oxygen‐delignified pulps and their impact on the usual methods of lignin determinations were investigated. The lignin analyses investigated were kappa number and Klason lignin in conjunction wit
Autor:
Leland Roy Schroeder, David C. Croll
Publikováno v:
Journal of Wood Chemistry and Technology. 24:27-38
2,6‐Anhydro‐1,3‐O‐methylene‐5‐O‐(4,6‐O‐methylene‐β‐D‐glucopyranosyl)‐D‐glycero‐D‐gulitol (1) was synthesized as a non‐reducing cellulose model compound for studying high temperature alkaline cleavage of the glucosid
Publikováno v:
Journal of Wood Chemistry and Technology. 11:307-327
Methyl β-D-ribopyranoside (1) and methyl β-D-xylopyranoside (2) were degraded by oxygen (0.682 MPa partial pressure) in 1.25 M sodium hydroxide at 120°C. The degradations of 1 and 2 were similar to the previously reported degradations of 1,5-anhyd
Publikováno v:
Journal of Wood Chemistry and Technology. 10:209-231
Reaction rates and product distributions have been determined for the degradation of phenyl β-D-glucopyranoside in aq. alkali under various conditions. The effects of a stronger nucleophile, variations in hydroxide ion concentration at constant ioni
Publikováno v:
Journal of Wood Chemistry and Technology. 6:1-14
Amorphous (noncrystalline) cellulose was prepared by dissolving cotton hydrocellulose in the dimethylsulfoxlde-paraformalde-hyde solvent system and regenerating the cellulose by slow addition of the resultant raethylol cellulose solution to stirred 0
Publikováno v:
Journal of Wood Chemistry and Technology. 2:187-205
The title compounds were degraded in 0.099M oxygen-free aqueous NaOH at 25°, and sometimes 45°. Cellobiose degraded primarily to 3-deoxy-2-C-hydroxymethyl-D-pentonic (“isosaccharinic”) acids, plus the series of 3- to 6-carbon 3-deoxyaldonic aci
Autor:
Leland Roy Schroeder, David A. Blythe
Publikováno v:
Journal of Wood Chemistry and Technology. 5:313-334
The title compound (1, 1,5-anhydrocelloblitol) was degraded at 170°C in kraft pulping liquor (l. 01 NaOH, 0.21 Na2S) to determine whether the sulfur anions affect the rate-determining and/or product-determining steps of glycosldic bond cleavage. Sin
Publikováno v:
Journal of Wood Chemistry and Technology. 8:441-460
A polymer-supported cellulose model was prepared by condensing the C-4′ hydroxyl group of a protected disaccharide, 2,3,6-tri-O-allyl-1,5-anhydro-4-O-(2,3,6-tri-O-allyl-s-D-glucopyranosyl)-D-glucitol (5), with an iodomethylated polystyrene resin an