1) concentration salt system
浓盐体系
1.
It investigates determination of mixed contents for saponification reaction in physical chemistry experiment based on reaction principle of concentration salt system.
应用浓盐体系反应原理研究了在物理化学实验课中皂化反应混合物含量测定问题 ,表明在饱和NaCl的作用下 ,当NaOH与NaAc的摩尔之比在 1～ 2时 ,获得最佳的实验效果 ,同时在实验教学中也取得了很好的效
2) extremely dense system
极浓体系
1.
6, n( H2O)/n(SiO2) of 5-10, n(SiO2)/n(Al2O3 ) of 30 - 80, with which the synthesis system was called the extremely dense system.
该合成体系为典型的极浓体系。
2.
Siliceous zeolite L was synthesized in extremely dense system with microsphere as the silica source, magnesium nitrate as the accelerant and fluoride as the mineral agent.
在极浓体系中,以硅铝微球为硅源、硝酸镁为促进剂,引入氟化物作为矿化剂,合成了高硅/铝摩尔比 (n(SiO_2)/n(Al_2O_3))的 L 型分子筛。
3) system concentration
体系浓度
4) extremely dense system
超浓体系
1.
The synthesis of molecular sieves in extremely dense system based on the solid chemistry is carried out without solvent,which can obviously reduce the pollution and save the energy resources,so that this method is a research area worthy of promoting.
超浓体系下分子筛的合成是以固相化学为基础,不使用溶剂,可以减少污染,节约能源,是值得倡导的研究方向。
2.
The NU-87 zeolite was synthesized in extremely dense system at 180℃ for 48 h with promoter.
首次采用超浓体系合成法,并引入促进剂,在180℃条件下晶化48 h,合成出具有高结晶度的 NU-87纯相分子筛,并考察了促进剂、投料硅/铝比(n(siO_2)/n(Al_2O_3)、碱/硅比(n(OH~-)/n(SiO_2))、水/硅比 (n(H_2O)/n(SiO_2))、模/硅比(n(DecBr_2)/n(SiO_2))等对合成结果的影响。
3.
Base on the foregoing work, the synthesis of SAPO-34 and SAPO-5 molecular sieve were designed and implemented in the extremely dense system, and many related factors which effect the synthesis of them are systematically investigated.
本文分析了分子筛的起源、发展以及磷酸硅铝分子筛的演变历程,以及SAPO-34分子筛在MTO工艺的国内外研究现状,在此基础上设计并实现了在超浓体系下SAPO-34分子筛和SAPO-5分子筛的合成,并且系统考察了各种因素对上述分子筛合成的影响。
5) salt-water system
水盐体系
1.
Through the summary for the thermodynamic properties of binary,ternary and multi-dimensional salt-water systems containing sodium chloride at various temperatures.
总结了近几十年来含氯化钠电解质水溶液体系热力学性质的研究成果及其在盐湖、地下卤水、油田水和海盐制备等领域的应用,并对含钠水盐体系在不同温度下的热力学性质进行了总结,对于推动含钠水盐体系电解质溶液理论的发展和促进富盐湖卤水、地下卤水及海水的开发利用具有重要的意义。
2.
Studies on the phase diagrams of the lithium-containing salt-water systems are of great importance for the development of salt lake resources.
盐湖资源是我国西部的优势矿产资源之一,其成功开发需以相应的相平衡与相图为指导,因此含锂水盐体系的相平衡研究对于盐湖卤水资源的开发利用具有重要的意义。
6) salt system
有盐体系
1.
Nano-silica white was prepared from salt system containing silica,Al3+ and Mg2+,in this preparation process some dispersant and surface modifying agent were applied and ammonia was used to adjust the pH of the solution.
利用含镁、铝盐的有盐硅酸体系,以氨水调节其pH,加入分散剂及表面改性剂,制备出平均粒径为60nm左右的白炭黑样品,通过此体系的pH值与所制样品比表面积的关系,探讨了有盐体系中硅酸的聚合机理,发现:当pH<3。
2.
Nano-silica white was prepared from salt system containing silica, Al3+ and Mg2+, in this preparation process some dispersant and surface modifying agent were applied and ammonia was used to adjust the pH of the solution.
利用含镁、铝盐的有盐硅酸体系,以氨水调节其pH,加入分散剂及表面改性剂,制备出平均粒径为60nm左右的白炭黑样品,通过此体系的pH值与所制样品比表面积的关系,探讨了有盐体系中硅酸的聚合机理,发现:当pH<3。
补充资料：碳酸盐浸出法浓集铀
分子式：
CAS号：
性质：铀矿石的碳酸盐浸出法，即以碳酸钠与碳酸氢钠的混合溶液浸出铀，铀以UO2(CO3)34-络阴离子形式转入溶液，而矿石中存在的铁、铝、钙、镁等脉石矿物(杂质)均不被碳酸盐浸出，而留在矿渣中。由于碳酸盐对铀浸出的高选择性，在浸出阶段便达到浓集铀的目的。若以苛性钠由此浸出液中沉淀出重铀酸钠，则可得到纯度较高的黄饼。
CAS号：
性质：铀矿石的碳酸盐浸出法，即以碳酸钠与碳酸氢钠的混合溶液浸出铀，铀以UO2(CO3)34-络阴离子形式转入溶液，而矿石中存在的铁、铝、钙、镁等脉石矿物(杂质)均不被碳酸盐浸出，而留在矿渣中。由于碳酸盐对铀浸出的高选择性，在浸出阶段便达到浓集铀的目的。若以苛性钠由此浸出液中沉淀出重铀酸钠，则可得到纯度较高的黄饼。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条