溶剂调控下钯配合物催化降冰片二烯与四环庚烷共聚制备高密度燃料的研究OA
Solvent-Regulated Copolymerization of Norbornadiene and Quadricyclane Catalyzed by Pd Complex for High-Density Fuel
为探究溶剂对降冰片二烯(NBD)与四环庚烷(QC)共二聚反应的调控机制,实现exo-exo构型高密度燃料的定向合成,对比研究了正己烷与PEG 2000两种溶剂体系中Pd配合物的催化性能.结果表明:正己烷体系中,以聚酰胺-胺树状大分子0代为添加剂时exo-exo选择性达94.65%,但催化剂循环4次后转化率从75.96%降至17.67%;PEG 2000体系通过配位作用稳定Pd活性中心,优化条件下(Pd2(dba)3·CHCl3 为前驱体,80℃反应3 h,NBD转化率83.95%,exo-exo选择性91.6%,循环4次后转化率仍保持58.37%.加氢产物H-exo-exo体积净热值44.66 MJ/L,冰点-28℃,具备优良燃料性能.通过溶剂调控实现了催化活性、选择性与稳定性的协同提升,为高密度燃料绿色制备提供技术参考.
To explore the solvent regulation mechanism in the codimerization of norbornadiene(NBD)and quadricyclane(QC),and achieve the synthesis of exo-exo configured high-density fuel,this study compared the catalytic performance of Pd complexes in n-hexane and PEG 2000 solvent systems.Results showed that in n-hexane,with generation 0 dendrimer as additive,the selectivity of exo-exo reached 94.65%,but the conversion rate dropped from 75.96%to 17.67%after 4 catalyst cycles.In PEG 2000 system,Pd active centers were stabilized by coordination.Under optimized conditions(Pd2(dba)3·CHCl3 as precursor,80℃for 3 h),NBD conversion was 83.95%with exo-exo selectivity of 91.6%,and the conversion remained 58.37%after 4 cycles.The hydrogenated product H-exo-exo had a net volumetric calorific value of 44.66 MJ/L and a freezing point of-28℃,showing excellent fuel properties.This study realizes the synergistic improvement of catalytic activity,selectivity and stability through solvent regulation,providing technical reference for green preparation of high-density fuels.
李聪;徐天艺;马其坤;郝晴
唐山工业职业技术大学,河北 唐山 063299唐山工业职业技术大学,河北 唐山 063299唐山工业职业技术大学,河北 唐山 063299唐山工业职业技术大学,河北 唐山 063299
化学化工
溶剂调控Pd配合物降冰片二烯共聚反应exo-exo构型高密度燃料
solvent regulationPd complexnorbornadienecopolymerizationexo-exo configurationhigh-density fuel
《工业技术与职业教育》 2026 (1)
1-5,5
唐山工业职业技术大学校级课题"非均相体系催化降冰片二烯聚合制备高密度燃料关键技术研究"(课题编号:XJKT202501),主持人李聪.
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