Figure 4 shows the TG, differential TG (DTG), and DTA thermal analysis curves for the powder sample in the temperature range of 300-1600 K. The powder sample was prepared from single crystals as...

Calcium sulfate dihydrate (CaSO4·2H2O) was prepared from the chemical reaction between calcium carbonate from duck eggshell and sulfuric acid at 25°C. The CaSO4·2H2O was dried in an oven at...

2016年9月10日 · Variations in the DTA/TGA traces, in conjunction with XRD, were used to estimate the chemical composition and effect of that impurity on the high temperature performance of CaSO 4 ·2H 2 O ores. Representative hemihydrate phases from natural and FGD sources and reagent grade calcium sulfate were rehydrated with distilled water and compared by ...

In this study, a simple and efficient strategy is developed to synthesize rod-like CaSO4·2H2O (DH) crystals with tunable aspect ratio in aqueous solution using Cu²⁺ as modifier.

2019年9月1日 · Thermal behavior of three pure sulfates (CaSO 4, K 2 SO 4 and Na 2 SO 4) as well as solid-phase reactions between each sulfate and cement raw materials (CaO-SiO 2 -Al 2 O 3 -Fe 2 O 3, CSAF) at high temperature were investigated experimentally.

Thermal studies were carried out on CaSO 4 · 2H 2 O and the supposed α and β forms of CaSO 4 · 1/2H 2 O in the region of 25 to 500 ° C. using differential thermal analysis, thermogravimetry, and differential scanning calorimetry methods.

采用梅特勒-托利多tga/sdta 进行热重测试。 应用根据失重变化自动调节升温速率的 软件选项(高分辨MaxRes) 来改善失水过程的分离。

Experimental methods • TGA of synthetic dehydrated CaSO 4 • 2H 2 O under controlled 𝑻 and 𝑷 𝑯 𝟐 𝑶 • Symmetrical thermobalance (TAG 16 Setaram) and water vapor generator (Wetsys Setaram) • Δm by TGA used to calculate the water content 𝜀 (using a dry

2016年5月5日 · 高温度和压力都导致CaSO4还原分解速率加快,CaSO4分解产物主要是GaS;在1000℃时CaSO4 和CaS之间可以发生固2固反应生成CaO. 关键词 TGA,CaSO4,还原分解,XRD

2015年10月1日 · A modified shrinking unreacted-core model, based on thermogravimetric analysis, was developed to investigate CaSO 4 decomposition in oxy-fuel combustion, especially under isothermal condition which is difficult to achieve in actual experiments due to high-temperature corrosion.