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- W2958522839 endingPage "115782" @default.
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- W2958522839 abstract "• Hydrocarbon-dispersible Pt nanoparticles capped by macroinitiator were synthesized. • Platinum/methylcyclohexane nanofluids with hyperbranched polymer were prepared. • Cracking performance and heat sink were promoted for nanofluids. For thermal management in advanced hypersonic aircraft, a series of platinum/hydrocarbon nanofluids with hyperbranched polymer as stabilizer and initiator were designed in this work. Hydrocarbon-dispersible Pt nanoparticles capped by modified hyperbranched polyethyleneimine (Pt@HPEI) with average sizes of 2.4 nm were synthesized through phase transfer method. For methylcyclohexane (MCH) based nanofluids (MCH + Pt@HPEI), the density showed no difference and the viscosity decreased by 2.0% compared to MCH. The catalytic cracking of MCH + Pt@HPEI carried out in a batch reactor presented significant improvement compared to thermal cracking. The supercritical cracking experiments operated on a tubular reactor proved the promoted performance of nanofluids by conversions, gas yields and heat sinks. At 650 °C, the conversion of MCH increased from 12.4 wt% to 33.0 wt% and the heat sink enhanced from 1.99 MJ/kg to 2.24 MJ/kg with the existence of 0.0060 wt% Pt@HPEI. To acquire the same heat sink of 2.10 MJ/kg, the temperature can be lowered from 664 °C to 642 °C. The reactions forming hydrogen and unsaturated hydrocarbons were preferred. The practical application for the cracking of JP-10 + Pt@HPEI also showed enhanced performance. Platinum/hydrocarbon nanofluids with hyperbranched polymer as stabilizer and initiator are potential fuels with promoted cracking performance and endothermic capacity for thermal management in advanced hypersonic aircraft." @default.
- W2958522839 created "2019-07-23" @default.
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- W2958522839 date "2019-11-01" @default.
- W2958522839 modified "2023-10-14" @default.
- W2958522839 title "Cracking of platinum/hydrocarbon nanofluids with hyperbranched polymer as stabilizer and initiator" @default.
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- W2958522839 doi "https://doi.org/10.1016/j.fuel.2019.115782" @default.
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