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Nongnuch Rueangjitt Wariya Jittiang Krittiya Pornmai Jintana Chamnanmanoontham Thammanoon Sreethawong Sumaeth Chavadej 《Plasma Chemistry and Plasma Processing》2009,29(6):433-453
The effect of stage number of multistage AC gliding arc discharge reactors on the process performance of the combined reforming
and partial oxidation of simulated CO2-containing natural gas having a CH4:C2H6:C3H8:CO2 molar ratio of 70:5:5:20 was investigated. For the experiments with partial oxidation, either pure oxygen or air was used
as the oxygen source with a fixed hydrocarbon-to-oxygen molar ratio of 2/1. Without partial oxidation at a constant feed flow
rate, all conversions of hydrocarbons, except CO2, greatly increased with increasing number of stages from 1 to 3; but beyond 3 stages, the reactant conversions remained almost
unchanged. However, for a constant residence time, only C3H8 conversion gradually increased, whereas the conversions of the other reactants remained almost unchanged. The addition of
oxygen was found to significantly enhance the process performance of natural gas reforming. The utilization of air as an oxygen
source showed a superior process performance to pure oxygen in terms of reactant conversion and desired product selectivity.
The optimum energy consumption of 12.05 × 1024 eV per mole of reactants converted and 9.65 × 1024 eV per mole of hydrogen produced was obtained using air as an oxygen source and 3 stages of plasma reactors at a constant
residence time of 4.38 s. 相似文献
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Natsima Viriyaadhammaa Aroonchai Saiai Waranya Neimkhum Wariya Nirachonkul Wantida Chaiyana Sawitree Chiampanichayakul Singkome Tima Toyonobu Usuki Suwit Duangmano Songyot Anuchapreeda 《Molecules (Basel, Switzerland)》2020,25(22)
Curcuma comosa belongs to the Zingiberaceae family. In this study, two natural compounds were isolated from C. comosa, and their structures were determined using nuclear magnetic resonance. The isolated compounds were identified as 7-(3,4-dihydroxyphenyl)-5-hydroxy-1-phenyl-(1E)-1-heptene (1) and trans-1,7-diphenyl-5-hydroxy-1-heptene (2). Compound 1 showed the strongest cytotoxicity effect against HL-60 cells, while its antioxidant and anti-inflammatory properties were stronger than those of compound 2. Compound 1 proved to be a potent antioxidant, compared to ascorbic acid. Neither compounds had any effect on red blood cell haemolysis. Furthermore, compound 1 significantly decreased Wilms’ tumour 1 protein expression and cell proliferation in KG-1a cells. Compound 1 decreased the WT1 protein levels in a time- and dose- dependent manner. Compound 1 suppressed cell cycle at the S phase. In conclusion, compound 1 has a promising chemotherapeutic potential against leukaemia. 相似文献
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