The FTIR spectra of cellulose treated with 7% BTCA and 4.5% NaH2PO2; (A) no treatment; (B) at 25℃; (C) at 85℃; (D) at 160℃ without catalyst; (E) at 160℃ with catalyst"
Fig.1
Fig.2
The FTIR spectra of wood meal treated with different concentration BTCA and 4.5 % NaH2PO2 reacted at 160℃"
Fig.2
Fig.3
The FTIR spectra of dioxane lignin treated with different concentration BTCA and 4.5% NaH2PO2 reacted at 160℃"
Fig.3
Fig.4
The CP/MAS13C NMR spectra of wood meal; (A) no treatment; (B) treated with 7 % BTCA and 4.5 % NaH2PO2 reacted at 160 ℃"
Fig.4
Fig.5
The FTIR spectra of cellulose treated with 7% BTCA and 4.5% NaH2PO2 reacted at 160℃; (A) no treatment; (B) unwash; (C) washed; (D) treated with alkali; (E) Dtreated with acid"
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沈德言. 红外光谱在高分子研究中的应用. 北京: 科学出版社. 1982.
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