两级过滤膜生物反应器在中水回用火电厂的工程应用

应用两级过滤膜生物反应器专利技术,处理城市污水厂二级排水,深度处理后出水水质达到或超过设计值,回用于火电厂全厂的工业用水,取得良好的经济效益和社会效益,处理水成本为1.5元·m-3.     

Morphological characterization and kinetics study of polyaniline film formation by emulsion polymerization

The kinetics and morphology of polyaniline film prepared by using ammonium persulfate (APS) as oxidant and dodecylbenzoyl sulfonic acid (DBSA) as both emulsifier and dopant were studied in this paper. The kinetics of the formation of polyaniline film was determined by using the quartz crystal microbalance (QCM), and the film morphology was characterized by scanning electron microscopy (SEM). The reaction exhibited half-order kinetics with respect to APS concentration and first-order kinetics with respect to aniline concentration. The activation energy is 41.15 kJ/mol, and the growth rate of PANI film increased with increasing temperature and decreased with increasing concentration of DBSA.     

粘胶基碳纤维连续式电化学氧化表面处理(1)--碳纤维表面的物理化学性能

本文报道了用连续式电化学氧化表面处理粘胶基碳纤维表面,并测定了处理后碳纤维的单丝强度、表面浸润性、表面活性官能团含量及表面形貌等表面物理化学性能.结果表明:粘胶基碳纤维经电化学氧化表面处理可以有效地在表面产生活性官能团和提高表面粗糙度,从而有效地提高表面润湿性,但经处理后单丝强度较易下降,因此需精确控制处理的条件.     

相转移催化法合成对甲氧基苯乙醇酸的研究

以对甲氧基苯甲醛、三氯甲烷为原料,相转移催化羰基加成法合成了对甲氧基苯乙醇酸。分析探讨了其相转移催化机理及合成工艺参数。     

Three-dimensional porous amorphous SnO2 thin films as anodes for Li-ion batteries

Three-dimensional (3D) porous amorphous SnO₂ thin films were deposited on Ni foam substrates by Electrostatic Spray Deposition (ESD) technique as anodes for Li-ion batteries. These films display good capacity retention of 94.8% after 100 cycles at 0.5 C and rate capability of 362 mAh/g at 10 C. The improved performance originates from the fact that the 3D porous structure offers a “buffer zone” to accommodate the large volume change during cycling, and the foam-like substrate maximizes the contact area between electrode and electrolyte. The facile ESD method can be potentially extended to prepare other 3D porous functional materials.     

The metal-incorporated mesoporous carbon with high performance in capture and degradation of volatile nitrosamines

A new attempt to make novel catalysts for environment protection is reported in this article. The mesoporous carbon with disordered structure is prepared using SBA-15 silica as the hard template and the P123 micelles colluded in the channel as the carbon precursor in one-pot synthesis. To develop the composite of metal-incorporated mesoporous carbon, the metal salt such as ferric sulfate is also utilized as the additive in the synthetic process, resulting in the disordered mesoporous carbon to contain metal species such as α-Fe. Compared with the order mesoporous carbon and the silica/carbon hybrid materials, the disordered mesoporous carbon possesses a good adsorption ability of volatile nitrosamines along with an excellent catalytic activity in the degradation of nitrosamines.     

低浓度三氯乙烯活性炭吸附净化及数值模拟

对低浓度三氯乙烯在活性炭固定床中的吸附净化作了系统研究。测定了三氯乙烯-空气-活性炭系统吸附等温线及在40×120mm活性炭固定床中穿透曲线;建立了三氯乙烯活性炭固定床吸附数学模型并用此预测了穿透曲线,实验与计算结果对比表明模型预测与实验结果吻合良好。     

邻氨基苯磺酸生产装置技术改造

通过改进生产工艺与设备,提高了装置生产能力和产品质量指标,达到了降本增效的目的。     

对称型双端过渡态丁二烯/苯乙烯嵌段共聚物的研制Ⅰ.共聚合反应动力学研究

以双卤代烷烃取代型双锂齐聚物为引发剂、环己烷为溶剂,丁二烯(B)、苯乙烯(S)单体采用1次加入的方法,合成了对称型双端过渡态丁二烯/苯乙烯嵌段共聚物S-(S/B)-B-(B/S)-S,并对双锂体系丁二烯、苯乙烯共聚合反应过程进行了研究,将丁二烯、苯乙烯共聚合反应动力学数据进行分段处理,求得不同引发温度、不同单体配比、不同极性添加剂用量[二乙二醇二甲醚(2G)/Li]下丁二烯聚合段、苯乙烯聚合段假一级表观增长反应速度常数kp1、kp2;求得不同2G/Li下丁二烯、苯乙烯共聚合反应的表观竞聚率,随着2G/Li的增大,丁二烯的表观竞聚率减小,苯乙烯的表观竞聚率增大,表明随着2G/Li的增大,丁二烯、苯乙烯逐渐向无规共聚合方向发展.     

磷系共聚阻燃涤纶(ST-PET)短纤维生产工艺

探讨了以磷系共聚阻燃切片纺制阻燃涤纶短纤维的生产工艺。与常规短纤生产工艺相比,预结晶、干燥的温度及时间,纺丝、拉伸、定型温度,拉伸倍数及配比,纤维上油量都应作适当调整。经纺丝实验,此工艺合理,可进入工业化规模生产。