基于矿物质定量热分析的灰熔融反应动力学

利用矿物质定量热分析理论对三种典型煤样灰熔融过程进行了详细分析,借助化学反应动力学相关概念,计算了灰样熔融反应动力学参数,结果表明:灰样熔融过程呈明显的三阶段反应过程,即初始熔融阶段、矿物共熔阶段以及熔融末期;熔融初始阶段反应活化能均大于后面两个阶段,矿物共熔过程活化能较初始阶段明显下降;在理论上证明了灰熔融逐渐加剧的过程。     

Characterization of FDR fly ash and brick/lime mixtures

The present research is concerning the characterization of FDR (fuel derived from residues) fly ash and mixtures with lime/brick hydraulic binder by DTA/TG/DTG thermo-analysis, X-ray diffractometry and chemical analysis. The use of hydraulic binder obtained from building brick rejects, which is less expensive than the usual solidifiers such as cementitious binder and silicates, allows us to reutilize, in the meantime, this wreckage material, to the advantage of environmental sustainability. Fly ash samples investigated in the present study were separated in a thermo-incineration plant. Mineralogical DTA/TG/DTG and XRD investigations reveal the presence of different phases as well as chemical analysis shows a moderate concentration of heavy metals and high content of chloride and sulphate. Results obtained from leaching tests with water carried out on hardened pastes containing fly ash lead to interesting results, which highlight behaviour to the release of contaminants. The whole of the results obtained in the present study make it possible to regard the objective of disposing such hardened materials in inert waste landfill sites as achievable.     

大黄游离羟基蒽醌的TG—DTA和XRD谱图特征分析

中药大黄属蓼科植物,性寒味苦,是中医临床常用药物,具有攻坚破积、活血化瘀、泻火凉血、清热解毒及抗菌、抗炎、调节免疫、抗肿瘤、止血和保健等作用[1].     

大黄游离羟基蒽醌的TG-DTA分析

大黄游离羟基蒽醌的TG-DTA分析;大黄;游离羟基蒽醌;热重法（TG）;差热分析（DTA）     

仲丁基膦酸-2-丁基辛酯与希土固体配合物的研究

合成了仲丁基膦酸-2-丁基辛酯(HBO/BP)与希土(Ⅲ)(Ln=La, Gd, Ho, Y, Er, Yb)新的固体配合物，其组成为Ln(BO/BP)₃，对配合物的性质进行了表征。热分析表明，在空气中，热分解分两步完成，热分解产物是Ln₂P₄O₁₃。测定了配合物的红外光谱，对其主要吸收谱带进行了归属，配合物中Ln-O键具有较高的离子特性。