共查询到19条相似文献，搜索用时 203 毫秒
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李其京 《荆门职业技术学院学报》2006,21(6):12-16
根据两种测量水合物分解动力学的方法———恒压分解方法和恒容分解方法,研究了在阴离子表面活性剂十二烷基硫酸钠(SDS)体系中,乙烯水合物在冰点以下的分解动力学规律.结果表明,2 6 9.1 K,0.3 6 MPa或267.1K,0.26 MPa均为较适宜的储存乙烯水合物条件. 相似文献
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温度、氯化钠及乙醇对离子型表面活性剂临界胶束浓度的影响 总被引：4，自引：0，他引：4
表面活性剂的一个重要性质是其临界胶束浓度(Cfitical Mcelle Concentration，简称CMC)^[1]。本文利用电导率法分别对阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)和阴离子表面活性剂十二烷基硫酸钠(SDS)的CMC进行了研究，测试了这两种离子型表面活性剂在不同温度及添加不同量的无机盐NaCl和有机物乙醇时电导率变化，从而得到温度、NaCl、乙醇对CTAB、SDS的临界胶束浓度的影响规律，并对有关实验结果作了探讨。 相似文献
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在40 ℃下,用ε-β"鱼状"相图法研究了阴离子表面活性剂十二烷基磺酸钠(十二烷基硫酸钠、十二烷基苯磺酸钠)/烷烃/脂肪醇/盐水微乳液体系的相行为和增溶能力,测定了亲水-亲油平衡界面膜的组成.结果表明,阴离子表面活性剂亲油基体积越大、油相碳链越短、醇的碳链越长、NaCl的浓度越高,微乳液的增溶能力越强. 相似文献
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本文应用紫外分光光度法研究了在表面活性剂十六烷基三甲基溴化铵(CTAB)，十二烷基硫酸钠(SDS)，聚氧乙烯醚(Brij35)胶束溶液中三氟乙酰苯胺的碱性水解反应。实验表明表面活性剂对三氟乙酰苯胺的碱性水解反应均有一定的催化作用，并应用Menger和Portnoy提出的动力学模型计算了反应的动力学参数和热力学参数，讨论了胶束对酰胺的碱性水解的促进原因。 相似文献
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微/纳米氧化锌是一类重要的新型无机材料。本文主要采用溶胶-凝胶法,用乙酸锌、草酸和无水乙醇制备微/纳米氧化锌,分别从反应物浓度、表面活性剂种类、表面活性剂添加量三个方面进行探究。实验结果表明,当草酸乙醇溶液和乙酸锌溶液浓度分别为0.6 mol/L、0.9 mol/L时,pH为1,按质量比1:1复配的比例添加十二烷基硫酸钠和聚乙烯吡咯烷酮,煅烧,测得所制备的氧化锌纯度高,晶型良好,粒径分布均匀。 相似文献
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翁晴 《福建工程学院学报》2012,(3):214-217
以表面活性剂十二烷基硫酸钠(SDS)对沸石进行改性,改性后的沸石对亚甲基蓝溶液进行吸附,以紫外可见分光光度计分析最佳吸附条件。实验结果表明:SDS改性沸石吸附亚甲基蓝的最佳投入量为0.2 g;平衡时间为25 min;随着亚甲基蓝溶液的初始浓度增大,吸附量增大;溶液中其他阳离子存在竞争吸附。吸附过程可用伪二级反应动力学方程来描述,吸附活化能较小,主要为物理吸附过程。 相似文献
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研究了一类新型的两性表面活性剂-3-[N-(3-烷氧基-2-羟丙基)-N，N-二甲基铵]-2-羟丙基酸性磷酸酯甜菜碱(AHDHPB)的物化性能，包括两性特征、泡沫性能、表面张力、临界胶束浓度、临界溶解温度。研究结果表明，这类表面活性剂在pH=4．0～7．0范围内显示两性特征；在pH=5左右具有优良的发泡力、泡沫持久性和室温下优良的水溶性；其临界胶束浓度(cmc)和表面张力(γcmc)比阴离子表面活性剂十二烷基硫酸钠(SDS)和阳离子表面活性剂十二烷基三甲基溴化铵(DTAB)要低，属于高效表面活性剂。 相似文献
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本文以板876储气库为例,由影响地下储气库扩容的地质因素出发,对圈闭特征、储层物性特征、断层封闭性、水体特征、盖层特征等因素进行分析,总结了在我国类似地区建设地下储气库进行扩容时所应注意及可充分利用的地质条件,并对其他影响地下储气库扩容的因素作了简要分析。 相似文献
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Interaction of nonionic surfactant AEO9 with ionic surfactants 总被引：2，自引：0，他引：2
INTRODUCTION Long chain nonionic surfactants such as poly-oxyethylenated alcohols C12H25O(CH2CH2O)9H (AEO9), are widely used in the chemical industry in fabric detergency and tertiary oil recovery due to their excellent surface-active properties. In many practical applications, surfactants are used in formulations containing mixtures of different compounds, and synergism can often be observed. Synergism is de-fined here as the condition in which the properties of a mixture are better… 相似文献
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Bubble formation in an opposite-flowing T-shaped microchannel with 40 μm in depth and 120 μm in width was real-time visualized and investigated experimentally by means of a high speed camera. N2 bubbles were generated in glycerol-water mixtures with different concentrations of surfactant sodium dodecyl sulfate (SDS). And the images were captured by the high speed camera linked to a computer. Results indicated that the bubble formation process can be distinguished into three consecutive stages, i.e., expansion, collapse and pinching off. The bubble size decreases with the increase of liquid flow rate and viscosity of liquid phase as well as the decrease of gas flow rate. The surface tension of the liquid phase has no measurable influence on the bubble size. Moreover, a new approach to predicting the size of bubbles formed in the T-shaped microchannel is proposed. And the predicted values agree well with the experimental data. 相似文献
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A laboratory-scale trickling biofilter column,filled with Raschig rings and inoculated with Pseudomonas putida (ATCC 1785)was used to purify chlorobenzene contained waste gases.Sodium dodecyl sulfonate(SDS)was used to enhance the performance of trickling biofllter.Purification performance of the trickling biofilter was examined for chlorobenzene inlet concentration of 1.20～5.04 g/m~3 at different EBRTs between 76～153 s.Without SDS addition,with simultaneous increase in chlorobenzene inlet loading rate and gas flow rate,100% removal efficiency was achieved at EBRT of 109 s and inlet loadings below 5120 mg/m~3.Addition of SDS to nutrient solution led to improvement of trickling biofilter purification performance. By introducing 25 mg/L SDS,the removal efficiency was increased by 21% and elimination capacity up to 234 g/(m~3.h)was achieved at chlorobenzene inlet loading of 241 g/(m~3.h).Although SDS concentration experienced a low rate reduction after continuous nutrient solution recirculation,this result has little influence on trickling biofilter's removal efficiency in monitoring period. 相似文献
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综述近几十年来国内外笼形水合物储氢材料的研究概况,介绍笼形水合物储氢材料的结构、稳定性,并对不同结构水舍物的储氢特性及储氢量进行比较．最后对笼形水舍物储氢材料研究中存在的问题及今后的发展方向进行探讨与展望． 相似文献
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New numerical solution for self-acting gas journal bearings 总被引：1，自引：0，他引：1
Taking a small pressure change in the gas film of self-acting gas-lubricated journal bearings into account, the corresponding nonlinear Reynolds equation is linearized through appropriate approximation and a modified Reynolds equation is derived and solved by means of the finite difference method （FDM）. The gas film pressure distribution of a self-acting gas-lubricated journal bearing is attained and the load capacity is calculated. The numerical solution has a better agreement with experimental data than a direct numerical solution for different values of the bearing number. It is of interest to note that the eccentricity ratio, at which the new numerical solution is in better agreement with experimental data, is different when the bearing number is changing. The new numerical solution is slightly larger when the eccentricity ratio is smaller, and becomes slightly smaller when the eccentricity ratio is larger. 相似文献
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国内地下储气库正在建设初期,安全管理工作也处于起步阶段,因此对于具有高风险源的地下储气库建设、运行工作,安全管理研究内容很多,这包括它的有效性、可操作性、指导性、合法性等,为科学地、高效地安全管理地下储气库提供支持. 相似文献