Boron trifluoride etherate as a catalyst precursor for coliquefaction of coal and plastics at the mild conditions
by Kun Du; Hong Wu; Yu Li; Lin Huang; Jianxin Zhang; Daoping Wang
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 10, No. 1, 2015

Abstract: The objective of this work is the study of boron trifluoride etherate (C₄H₁₀BF₃O, a kind of Lewis acid) as a catalyst to depolymerise coal. Coliquefaction of coal and low-density polyethylene (LDPE) using C₄H₁₀BF₃O with different weight ratio of coal and LDPE were carried out at 370°C. The similar coliquefaction using C₄H₁₀BF₃O at 200°C, and the similar coliquefaction using ammonium molybdate [(NH₄)2MoO₄] as catalyst at 370°C were performed for comparison. The result indicates that C₄H₁₀BF₃O plays a significant role in depolymerisation of coal at 370°C other than 200°C, and oil yield increased approximately 30% when the temperature increased from 200°C to 370°C. The main reason is that coal has a deeper level of cracking at higher temperature. The hexane soluble, hexane insoluble-tetrahydrofuran (THF) soluble and residue organic parts after coliquefaction were analysed by molecular weight, FT-IR, ¹H-NMR and ¹³C-NMR to get confirmatory results. [Received: April 29, 2013; Accepted: November 8, 2013]

Online publication date: Fri, 26-Jun-2015

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