Raman和FT—IR光谱研究乙酰胺和银（Ⅰ）,铜（Ⅱ）离子的作用

用Ｒａｍａｎ和ＩＲ光谱研究乙酰胺和Ａｇ（Ⅰ）－Ｃ（Ⅱ）离子的作用。结果发现，Ａｇ（Ⅰ）和Ｃｕ（Ⅱ）离子可增强对乙酰胺光谱频带的识别能力，原在ＡＡ中被掩盖的某些谱带，由于Ａｇ－Ｃｕ离子的进入而得到了辨认。     

有机掺杂溶胶-凝胶法制备pH敏感膜及其光谱响应的研究

使用四甲氧基硅烷（TMOS）和二甲基二甲氧基硅烷（DiMe-DMOS)为共先驱体，采用溶胶－凝胶的有机掺杂，制备对pH具有宽程响应的敏感膜。详细考察了包埋溴酚蓝和溴酚绿的敏感膜对pH的响应值、响应时间、泄漏和可逆性等响应性能指标，并进行了溴酚蓝和溴酚绿在水相与膜内吸收光谱的研究。     

新型丹皮酚肟酯的高效合成

以丹皮酚为原料,与乙酸在N,N-二甲基乙酰胺(DMAc)和SOCl₂作用下反应制得乙酰丹皮酚酯（1）; 1中酮羰基与盐酸羟胺反应生成相应的丹皮酚肟（2）;在DMAc和CH₂Cl₂体系中,取代羧酸(3a～3l)与SOCl₂反应生成酰氯后随即与2反应合成了系列新型丹皮酚肟酯(4a～4l),产率80.9%～95.5%,其结构经¹H NMR、¹³C NMR、IR和MS表征。以苯甲酰丹皮酚肟酯（4a）的合成为例,对反应条件进了优化。最优反应条件为：以DMAc(2 mL)为催化剂,酰氯化反应时间为20 min,酯化反应时间为3 h,产率95.1%。并对DMAc促进丹皮酚肟酯合成反应的可能机理进行了探讨。     

6-氧-叔丁基二甲基硅基-2,4-二-氧-苯甲酰基-3-氧-对甲氧基苄基-α-D-甘露吡喃糖乙硫苷的合成

以D-甘露糖为原料,通过乙酰化、去乙酰化、苯亚甲基化、硅基化等8步反应合成了6-氧-叔丁基二甲基硅基-2,4-二-氧-苯甲酰基-3-氧-对甲氧基苄基-α-D-甘露吡喃糖乙硫苷,总收率21.7%,其结构经¹H NMR, ¹³C NMR, IR和LC-MS(ESI)确证。     

链状Silicalite-1分子筛的合成

在传统的合成体系中, 加入聚电解质聚二烯丙基二甲基胺盐酸盐(PDDA)自组装合成链状的Silicalite-1分子筛材料, 考察了PDDA的加入对产物的影响, 并对其进行了XRD和SEM表征.     

Partial oxidation of dimethyl ether to H2/syngas over supported Pt catalyst

Dimethyl ether （DME） is a non-toxic fuel with high H/C ratio and high volumetric energy density, and could be served as an ideal source of H2/syngas production for application in solid oxide fuel cells （SOFC）. This study presents results of DME partial oxidation over a 1.5 wt% Pt/Ce0.4Zr0.6O2 catalyst under the condition of gas hourly space velocity （GHSV） of 15000-60000 ml/（g·h）, molar ratio of O2/DME of 0.5 and 500-700 ℃, and this temperature range was also the operation temperature range for intermediate temperature SOFC. The results indicated that the catalyst showed good activity for the selective partial oxidation of DME to H2/syngas. Under the working conditions investigated, DME was completely converted. Increase in reaction temperature enhanced the amount of syngas, but lowered the H2/CO ratio and yield of methane; while increase in reaction GHSV resulted in only slight variation in the distribution of products. The good catalytic activity of Pt supported on Ce0.4Zr0.6O2 for the partial oxidation of DME may be directly associated with the good oxygen storage capacity of the support, which is worth of further investigation to develop materials for application in SOFC.