粗品四氢呋喃的除醇与抗氧化技术

介绍了粗品四氢呋喃的除醇技术，过氧化物的生成机理与抗氧化技术。     

磷钼酸改性骨架铜催化剂上巴豆醛选择加氢制巴豆醇的研究

采用磷钼酸（H₃PMo₁₂O₄₀）对骨架铜催化剂（Raney Cu）进行改性，并以巴豆醛选择加氢反应为探针反应，考察了（H₃PMo₁₂O₄₀）负载量和焙烧温度对Raney Cu催化剂性能的影响。研究表明，随着H₃PMo₁₂O₄₀负载量的增加，催化剂对巴豆醇的选择性上升，当负载H₃PMo₁₂O₄₀质量分数达到7.2%时，催化剂对巴豆醇的选择性达到最高，为35.8%，而未改性的Raney Cu催化剂对巴豆醇的选择性只有0.32%。还考察了磷钼酸改性的骨架铜催化剂上巴豆醛选择加氢反应的工艺条件，研究表明，反应温度、反应压力和催化剂用量对巴豆醛的转化率有较大的影响，但对巴豆醇的选择性影响较小。适宜的反应条件为：H₂分压0.6 MPa，温度333 K，催化剂用量0.30～0.35 g·（mL-CRAL）^－1，此时巴豆醇的收率约25%。     

改性脲醛树脂胶粘剂合成的研究

研究了聚乙烯醇改性脲醛树脂胶粘剂的制备工艺和配方。实验得出：添加适量聚乙烯醇改性剂，甲醛和尿素的最佳物质的量的比为1．5：1，尿素分3次投料，反应温度控制在100℃左右，反应时问60min，可制得综合性能较好的低毒耐水脲醛树脂胶粘剂。产品质量稳定，固含量〉55％，粘度=120～150s，产品质量达到国家规定的指标。     

Water sorption of poly(vinyl alcohol)/ poly(diallyldimethylammonium chloride) interpenetrating polymer network hydrogels

Temperature‐responsive interpenetrating polymer network (IPN) hydrogels constructed with poly(vinyl alcohol) and poly(diallyldimethylammonium chloride) using the sequential IPN method were studied. The characteristics of IPN hydrogels were investigated using the dynamic vapor sorption system. IPN hydrogels exhibited a relatively high sorption ratio, 180–360% at room temperature. The sorption ratio of hydrogels depended on temperature. Diffusion coefficients were calculated according to the Fickian Law at several temperatures. The apparent activation energy was 5.43 kJ mol^?1, which corresponds to typical diffusion processes. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 1389–1392, 2003     

含氯化钠的聚乙烯醇静电纺丝研究

研究了不同聚合度聚乙烯醇与少量氯化钠盐混合物水溶液的静电纺丝,并与单纯聚乙烯醇水溶液的静电纺丝进行了对比。利用扫描电镜观察纤维的形态、直径变化。结果表明:聚乙烯醇水溶液中加入少量氯化钠,由于离子的作用可以使喷射流表面电荷密度增大,静电纺丝可得到比单纯聚乙烯醇更细的纳米纤维。     

提高炼厂气综合利用水平的途径

公司将进行催化裂化装置、气体分馏装置改造。预计改造后的丙烯产量将达到5．0万t／a，丁烯等C4产品大大增加。聚丙烯是公司目前丙烯化工利用的唯一产品，年产量2万t，C4的化工利用尚属空白。因此开辟过剩丙烯利用新途径，带动C4产业发展，形成化工产业链，提高公司炼厂气的综合利用水平，具有重要意义。合成异丙醇或环氧丙烷，就是这样一个突破口。     

糖蜜酒精废液OD值测定条件的确定

糖蜜酒精废液光密度的测定没有统一的方法,通过正交试验和单因素试验,对糖蜜酒精废液的光密度(OD)值的测定条件进行了研究。结果表明在波长为400nm和自然pH值的测定条件下,OD值最大,稀释度为20倍时光密度值落在最佳读数范围内。     

大量Li+存在的卤水体系中容量法测定Ca2+的分析方法研究

在Li 、Ca2 共存的相化学研究中,大量Li 的存在对配位滴定法测定Ca2 易产生较大干扰,致使卤水体系中钙的测定结果产生较大偏离。本文在进一步研究了用三乙醇胺作掩蔽剂消除Li 干扰的实验基础上,对高锂钙比(mLi∶mCa≥5)消除Li 的干扰,首次发现正丁醇-无水乙醇的混合液可有效掩蔽共存Li 的干扰。实验结果表明,该方法可使Ca2 分析结果相对误差不超过0.3%。样品加标回收率为99.90%~100.09%,相对标准偏差<0.2%。     

Ethanol production from raw starch by a recombinant yeast having saccharification and fermentation activities

In order to develop a method for converting raw starch into ethanol efficiently, direct fermentation of ozonized raw starch using a recombinant yeast was investigated. Ozonolysis was carried out as a pretreatment to convert raw starch into ethanol rapidly and efficiently, and then the effect of the ozone degradation conditions on the degree of polymerization and the amount of amylose in a raw starch was determined. Since the degree of polymerization was low and the amount of amylose was high, raw starch treated with an ozone concentration of 40 gm^?3 and an ozonation time of 30 min was the material chosen for alcohol fermentation. Though the recombinant yeast could not convert the untreated raw starch, it converted the soluble starch and the ozonized raw starch at a comparatively high yield into ethanol. About 56% of the ozonized raw starch decomposed, and the ethanol concentration obtained from the ozonized raw starch was markedly greater than that obtained from untreated raw starch. The dynamic behavior of cell growth, substrate degradation, and ethanol production was examined in a continuous culture under various dilution rates, and the optimal dilution rate, ie 0.15 h^?1, was determined for maximizing the ethanol productivity (amount of ethanol produced per unit time). © 2002 Society of Chemical Industry     

合成甲醇中的杂质乙醇成因及含量的测定

为解决甲醇产品中杂质乙醇的影响问题,对4种甲醇生产工艺中的造气工艺、合成工艺、粗甲醇和精甲醇成分进行考查并检验分析,总结出合成甲醇过程中,杂质乙醇的成因主要是合成气中的碳氢化合物含量引起的,并对工业甲醇中乙醇含量的测定方法进行了比较。