56862-62-5Relevant academic research and scientific papers
FURAN BASED COMPOSITIONS AND METHODS OF MAKING THEREOF
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Paragraph 0356, (2021/02/12)
Disclosed herein are processes for the preparation of compounds of formula (I) from one or more bio-derived reactants, and their use as base oils: [in-line-formulae](R1-A)b-(CHx)a(CHR2)m—(C(R4R5))n—(CHR3)o—(CHy)c-(A-R1′)d??(I)[/in-line-formulae] wherein a and c are independently 0 or 1, b and d are independently 1 or 2, x and y are independently 1 or 2, dependent upon the values of a-d, m and o are independently 0 or 1, n is an integer of 0-6, and each A is independently an unsaturated furan ring, a partially saturated furan ring, a saturated furan ring, or —(CH2)4—. Also, R1, R1′, R2, R3, R4 and R5 are independently selected from the group consisting of H and alkyl groups having 1 to 18 carbon atoms, with a proviso that at least one of R2, R3, R4, and R5 is not hydrogen, and the total carbon content of the compound of formula (I) is in the range of 20-62.
Molybdenum Oxide-Modified Iridium Catalysts for Selective Production of Renewable Oils for Jet and Diesel Fuels and Lubricants
Liu, Sibao,Zheng, Weiqing,Fu, Jiayi,Alexopoulos, Konstantinos,Saha, Basudeb,Vlachos, Dionisios G.
, p. 7679 - 7689 (2019/08/20)
Supported inverse metal-metal oxide catalysts have received significant research interest owing to their effective hydrodeoxygenation (HDO) activity toward biomass substrates, but the high cost of the reported catalysts poses a challenge for commercialization. We present the synthesis of a series of metal-metal oxide catalysts, Ir-MOx/SiO2 (M = Re, Mo, W, V, or Nb) and M′-MoOx/SiO2 (M = Rh, Ru, Pt, or Pd) and their HDO performance on multifuran (high carbon) substrates to produce renewable jet and diesel fuels and lubricant base oils. A MoOx-modified Ir/SiO2 catalyst with a Mo/Ir ratio of 0.13 (Ir-MoOx/SiO2) exhibits the highest product yield (78-96%) under mild reaction conditions. Controlled experiments using probe substrates reveal that furan ring hydrogenation and C-O hydrogenolysis of saturated and unsaturated furan rings occur in a sequential manner. The carbon atom adjacent to the furan or saturated furan ring of substrates or intermediate compounds undergoes slow C-C bond scission, resulting in a small fraction of lighter alkanes. Catalyst characterization suggests that Ir is reduced to a fully metallic state to dissociate hydrogen for hydrogenation. Intact MoOx, partly covering the Ir metal surface, promotes ring opening, hydrogenolysis of etheric and alcoholic C-O bonds, and hydrogenation of Ca? O bonds. This study highlights the potential of low-cost metal-metal oxide catalysts with low loading of oxophilic metals to enable cost-competitive production of bioproducts and demonstrates applicability of these catalysts on other substrates, including fatty acids, fatty esters, and lipids.
