EXPERIMENT STUDY ON DISSOLVED LIGNIN IN ACID LITHIUM BROMIDE FUSED SALT HYDRATE

Song Xiaomin; Xu Wenbiao; Li Yaru; Duan Xixin; Shi Junyou; Li Xiangyu

doi:10.19912/j.0254-0096.tynxb.2020-1298

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (3) : 469-473. DOI: 10.19912/j.0254-0096.tynxb.2020-1298

EXPERIMENT STUDY ON DISSOLVED LIGNIN IN ACID LITHIUM BROMIDE FUSED SALT HYDRATE

Song Xiaomin, Xu Wenbiao, Li Yaru, Duan Xixin, Shi Junyou, Li Xiangyu

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Abstract

To lignin with lithium bromide as the research foundation, the dissolution of the lithium bromide concentration and reaction temperature on the properties of lignin dissolved acid purified cod, using Fourier infrared spectrometer （FTIR） characterization of dissolved lignin before and after functional group, it is concluded that the most suitable for the conditions of the dissolved lignin: lithium bromide concentration is 60%, the reaction temperature is 120 ℃ is most suited to lignin dissolved. Acid lithium bromide molten salt hydrate can selectively crack lignin β—O—4 aryl ether bonds. The bromination of α—OH of lignin under the action of lithium bromide leads to partial dissolution of lignin under mild conditions. LiBr and HCl play an important role in catalytic ether bonds.

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lignin / lithium bromide / dissolve / aryl ether bond / catalysis

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Song Xiaomin, Xu Wenbiao, Li Yaru, Duan Xixin, Shi Junyou, Li Xiangyu. EXPERIMENT STUDY ON DISSOLVED LIGNIN IN ACID LITHIUM BROMIDE FUSED SALT HYDRATE[J]. Acta Energiae Solaris Sinica. 2022, 43(3): 469-473 https://doi.org/10.19912/j.0254-0096.tynxb.2020-1298

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