共搜索到190条信息，每页显示10条信息，共19页。用时：0小时0分0秒531毫秒
been greatly improved[12-14]. In this paper, nanocomposites based on SEBS, PP and hexadecyltrimethylammomum bromide (C16) exchanged montmorillonite[15] (MMT) were prepared using melt mixing... montmorillonite was kindly provided by Shanghai. Weisheng Company, which contain exchangeable cations of primarily Na+. Hexadecyltrimethyl-ammomum bromide (C16) was provided by Shanghai Lingfeng......
. [7] OOKA C, YOSHIDA H, HORIO M. Adsorptive and photocatalytic performance of TiO2 pillared montmorillonite in degradation of endocrine disruptors having different hydrophobicity[J]. Applied... and Surfaces A: Physicochem Eng Aspects, 2004, 230: 191-199. [9] JAGTAP N, RAMASWAMY V. Oxidation of aniline over titania pillared montmorillonite clays[J]. Applied Clay Science, 2006, 33: 89-98. [10] SUN......
, China Received 15 July 2007; accepted 10 September 2007 Abstract: Iron polymeric hydroxygroups pillared clays (Fe-PILC) were prepared by Na+-montmorillonite with iron pillaring agent. 2.01Au/Fe-PILC.... Naturally existing montmorillonite clays are layered alumni-silicates, which are held together by weak electrostatic force. New classes of materials have been recently developed by exchanging the small......
, montmorillonite and quartz in each soil sample were roughly estimated. X-ray diffraction pattern is shown in Figure 2. It can be clearly observed that the quartz diffraction peaks of four kinds of soil samples are prominent, and the diffraction peaks of montmorillonite, illite and kaolinite also appear in the mentioned samples. Through the processing of the test data, the approximate content......
into the open pores and therefore raise the efficiency of the dispersed nanoparticles. Bentonite, a member of the smectite group, is mainly composed of montmorillonite clay. Composites of metal oxide... on the composites’ antibacterial activity. 2 Experimental 2.1 Materials Bentonite clay (Na-montmorillonite), used as a solid support for zinc, was obtained from the Kansas Jam Company (Rasht, Iran......
influence the decomposition and transformation of silicate minerals [10]. For example, after a 20-day interaction with B. mucilaginosus D4B1, the expansion ratios of montmorillonite samples decreased from... produces organic acid, and this could be the cause for the decreased pH value in the culture medium [23]. YANG et al [11] studied the effect of B. mucilaginosus D4B1 on the montmorillonite structure......
analyzed by X-ray diffraction method [11]. The bulk composition (mass fraction) was determined as follows: 75.4% montmorillonite, 11.7% quartz, 7.3% cristobalite, 4.3% feldspar, 0.8% kaolinite, 0.5% calcite. It shows that the proportion of montmorillonite is dominant in the GMZ bentonite. The cation exchange capacity (CEC) of GMZ bentonite is 0.773 mmol/g and the specific surface area (SSA......
of interlayer space of modified montmorillonite with concentration of PAMAM dendrimers 3.3 TEM结果 图8所示为不同代数PAMAM改性膨润土在透射电镜下的形貌.从图8可以看出:钠膨润土晶粒为硅酸盐片层堆叠形成的多层结构.不同代数PAMAM改性后,形成了多层交叠的结构,未观察到剥离的结构,表明..., ADENUGA A A, et al. Synthesis and characterization of low-generation polyamidoamine (PAMAM) dendrimer-sodium montmorillonite (Na-MMT) clay nanocomposites[J]. Inorganic Chemistry, 2013, 52: 4603-4610......
area surpassed 1 000 cm2/g. Bentonite used had a colloid index of 6.6 mL/g, a swelling index of 20.7 mL/g, water absorption rate of 500.3% per 2 h, montmorillonite content of 88.8%, and a proportion... quantity and the electrostatic attraction between montmorillonite platelets and Ca2+ is larger, which cause Ca2+ easily to substitute Na+ in the interlayer of bentonite. The effects of Ca2+ on the water......
, 37: 948-952. [12] ZHANG S Q, HOU W G. Adsorption behavior of Pb(II) on montmorillonite [J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2008, 320: 92-97. [13] WAN M W, KAN C C..., 2004, 112: 183-190. [38] ALMEIDA C A P, DEBACHER N A, DOWNS A J, COTTET L, MELLO C A D. Removal of methylene blue from colored effluents by adsorption on montmorillonite clay [J]. Journal of Colloid......
