1)  4A
4A
1.
The 4A, 13X and LSX zeolites were ion exchanged with Li+ repeatedly in water solution, then the adsorption isotherms and breakthrough curves of these zeolites were measured at 25℃ The data demonstrate that 4A, 13X and LSX highly ion-exchanged with Li+ have higher adsorption capacity and better adsorption selectivity for N2 over Ar.
采用水溶液离子交换法制备了高Li+交换度的4A、13X和LSX分子筛,并在25℃下测定了它们的静态吸附等温线和动态穿透曲线。
2)  4A zeolite
4A 沸石
1.
This paper introduces the producing tech- nology and status of detergent builder in our country,and then analyzes the function compare of 4A zeolite,sodium metasili- cate,δ-Layered Sodium Silicate detergent builder and then proposes the 8-Layered Sodium Silicate is the best product to substitute STPP,sodium metasilicate,4A zeolite.
文章介绍了国内硅化合物中各洗涤助剂的生产工艺技术及生产状况,并对4A 沸石、偏硅酸钠、δ层硅等助洗剂的性价比作了客观分析。
3)  zeolite 4A
4A沸石
1.
Study on the synthesis of zeolite 4A and geopolymer and ion-exchange;
4A沸石和地质聚合物的合成与离子交换性能的研究
2.
New development of additive of non-phosphorous detergent-zeolite 4A;
无磷洗涤剂助剂4A沸石的新进展
3.
Influences of inorganic salt on crystallization of zeolite 4A;
无机盐对4A沸石晶化过程的影响
4)  zeolite 4A
4A分子筛
1.
Studies on the Synthesis of Zeolite 4A in Mirowave Field by Means of X-Ray Diffraction;
XRD粉末衍射法研究微波场作用下4A分子筛的合成
2.
Fast Synthesis of Ultra-fine Zeolite 4A at Low Temperature by Ultrasonic Method;
超细4A分子筛的超声波低温快速合成
3.
Mesoporous spheres of zeolite 4A were synthesized for the first time by microemulsion technique in n-hexane/ hexadecyl trimethyl ammonium bromide(CTAB)/n-octanol microemulsion system.
以正己烷/十六烷基三甲基溴化铵(CTAB)/正辛醇混合微乳液为反应体系,以硅酸钠和铝酸钠为反应原料,采用微乳法首次合成4A分子筛介孔球。
5)  4A Zeolite
4A沸石
1.
Synthesis of 4A Zeolite from Coal-series Kaolin;
煤系高岭土酸处理法合成4A沸石
2.
Influence of mixture system of SDS and CTAB on synthesis of 4A zeolite;
SDS与CTAB混合表面活性剂体系对合成4A沸石的影响
3.
Research of growth of 4A zeolite crystal for detergent;
洗涤剂用4A沸石晶体生长过程的研究
6)  4A zeolite
4A分子筛
1.
Application of 4A zeolite synthesized from Kaolin in toothpaste friction modifier;
高岭土合成4A分子筛及其在牙膏磨擦剂中的应用
2.
Effect of 4A Zeolite on Property of Flame Retardant PP by Melamine Phosphate/Pentaerythritol;
4A分子筛对三聚氰胺磷酸盐/季戊四醇阻燃PP性能的影响
3.
Synthesis of 4A zeolite and its application as toothpaste friction modifier;
4A分子筛的合成及其在牙膏磨擦剂中的应用
参考词条
补充资料:39Ar-40Ar age dating method
分子式:
CAS号:

性质:将含钾样品放入核反应堆中接受快中子照射,40K核被打进一个中子,而后放出一个质子,形成39Ar,用质谱计测定被照射样品的40Ar/39Ar比值,代替常规钾-氩法中40Ar/40K比值,从而计算出样品年龄的方法,计算公式如下:t=λ-1ln(1+J•40Ar/39Ar)。式中J=39Ar/40Ar•λ/λkΔT∫φ(ε)σ(ε)dε是样品照射持续的时间,Ф(ε)是能量为ε时的中子通量,σ(ε)为39K(n,p)39Ar的反应截面,实验中用一已知年龄(ts)的标准与待测样品一块进行辐照,由下式求得J值:J=(eλt-1)/(40Ar/39Ar)。此方法解决了过去钾、氩分别由不同方法测定所产生的不同误差使年龄精度较低的弊端;同时由于照射后样品氩的释放可采用阶段加温方法,对一个样品便可获得一系列的表面年龄,最终得到代表矿物或岩石结晶的稳定坪年龄;或由等时线法处理得到样品的年龄、认识外来氩的混入状况。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。