乙烯冷能利用方案设计

某厂EO装置和CO2装置需运行冷冻机组为装置提供冷量。低温乙烯作为下游原料时,需用蒸汽加热气化,为充分利用乙烯冷能,达到节能降耗的目的,现对其工艺流程进行方案优化设计。本文设计两种方案,分别对这两种方案进行了分析和比较,在保证充分利用能源的情况下,方案一更具有操作可行性和稳定性。     

Synthesis and photoluminescence of Eu（DBM）3phen/APTES-SBA- 15 with morphology of pearl-like chains

Novel ordered mesoporous Eu（DBM）3phergAPTES-SBA-15 （EAS） composites with reasonable photoluminescence property and interesting morphology of bundles of pearl-like chains were synthesized. The characteristics of the mesostructure and the optical properties of the prepared samples were investigated by means of XRD, FTIR, SEM, TEM, N2 adsorption-desorption and PL spectroscopy. The results indicate that the as-made EAS composites have long-distance ordered mesoporous structure. Compared with the Eu（DBM）3phen complex, it is found that the EAS composites perform a considerable photoluminescence with good color purity. It is proposed that the anchored amin~ from the APTES and quantum size effect of the Eu（DBM）3phen complex have great effect on the photoluminescence of the EAS composites.     

1-3型压电复合材料研究现状与展望

本文综述了近年来国内外1-3型压电复合材料的研究现状,并从理论模型、制备工艺、功能相体系的选择及其特点与应用等四个方面进行阐述,最后对其发展前景进行了展望。