4551-51-3Relevant articles and documents
Fabricating nickel phyllosilicate-like nanosheets to prepare a defect-rich catalyst for the one-pot conversion of lignin into hydrocarbons under mild conditions
Cao, Meifang,Chen, Bo,He, Chengzhi,Ouyang, Xinping,Qian, Yong,Qiu, Xueqing
supporting information, p. 846 - 857 (2022/02/09)
The one-pot conversion of lignin biomass into high-grade hydrocarbon biofuels via catalytic hydrodeoxygenation (HDO) holds significant promise for renewable energy. A great challenge for this route involves developing efficient non-noble metal catalysts to obtain a high yield of hydrocarbons under relatively mild conditions. Herein, a high-performance catalyst has been prepared via the in situ reduction of Ni phyllosilicate-like nanosheets (Ni-PS) synthesized by a reduction-oxidation strategy at room temperature. The Ni-PS precursors are partly converted into Ni0 nanoparticles by in situ reduction and the rest remain as supports. The Si-containing supports are found to have strong interactions with the nickel species, hindering the aggregation of Ni0 particles and minimizing the Ni0 particle size. The catalyst contains abundant surface defects, weak Lewis acid sites and highly dispersed Ni0 particles. The catalyst exhibits excellent catalytic activity towards the depolymerization and HDO of the lignin model compound, 2-phenylethyl phenyl ether (PPE), and the enzymatic hydrolysis of lignin under mild conditions, with 98.3% cycloalkane yield for the HDO of PPE under 3 MPa H2 pressure at 160 °C and 40.4% hydrocarbon yield for that of lignin under 3 MPa H2 pressure at 240 °C, and its catalytic activity can compete with reported noble metal catalysts.
REACTION OF cis-BICYCLONONA-3,7-DIENE WITH IODINE. SYNTHESIS OF TRICYCLO3,7>NONA-4,8-DIENE (BREXA-4,8-DIENE)
Lukovskaya, E. V.,Bobyleva, A. A.,Pekhk, T. I.,Dubitskaya, N. F.,Petrushenkova, I. A.,Belikova, N. A.
, p. 1311 - 1317 (2007/10/02)
The reaction of iodine with cis-bicyclonona-3,7-diene is accompanied by regioselective and stereoselective transannular cyclization with the formation of endo-4,exo-8-diiodobrexane.Methods were developed for the production of endo-9-iodobrex-4-ene and brexa-4,8-diene with yields of 26 and 20percent respectively.The mechanism of transannular cyclization is discussed.
FORMATION OF SOME BICYCLIC SYSTEMS BY RADICAL RING-CLOSURE
Beckwith, Athelstan L. J.,Phillipou, George,Serelis, Algirdas K.
, p. 2811 - 2814 (2007/10/02)
The rates and stereochemistry of ring closure of the radicals (2), (9), (10), and (16) have been determined and rationalised.
