Calcium carbonate has a XRD powder diffraction pattern at 2 values 29.4, 39.4, 43.2, 47.4, and 48.5 degree. By increasing the decomposition temperature to 1100 o C, it was found that the...

This paper reports the synthesis of new transition metal oxide-modified CaO catalysts derived from eggshells for the transesterification of refined waste cooking oil. CaO is a well-known base...

X-ray diffraction (XRD) analysis provided insights into the transformation of crystalline phases of CaCO3, starting from aragonite to calcite and eventually to calcium...

2014年1月25日 · The crystalline structure of Ca(OH) 2 and CaO nanoparticles were characterized by X-ray diffraction (XRD, PHILIPS, X’pert-MPD system, λ = 1.54 Å). Thermal behavior for the precursor was studied through thermogravimetric analysis (TGA–DSC), which was performed with a STA409PG under nitrogen flow.

2019年8月1日 · CaCO 3 is a promising material for thermochemical energy storage (TCES) systems. It can store and release heat upon reversible decarbonation to CaO, which emits heat through carbonation. Decarbonation temperature of CaCO 3 directly affects the properties of CaO, which influences heat supply in result.

2023年2月1日 · CaO-based sorbents were evaluated in practical calcium looping processes. K 2 CO 3 triples the CO 2 capture capacity of the CaO-based sorbents. Enhancing mechanism was investigated by in-situ XRD and in-situ Raman. K was incorporated into the CaO structure and influences the CaCO 3 structural evolution during carbonation.

2022年7月1日 · In this paper, the preparation of calcium oxide (CaO) nanoparticles (NPs) is reported by a precipitation method, using CaCl 2 and NaOH as starting raw materials. The produced NPs were characterized for chemical composition, phase composition, particle size distribution, morphological features, specific surface area, and crystallite sizes.

2023年11月15日 · Calcium oxide nanoparticles (CaO NPs) were green synthesized and used as a catalyst material for developing the sensor. Synthesized materials formation was confirmed by different techniques...

氧化钙（cao）的x射线衍射（xrd）特征峰主要出现在以下位置： - 2θ角度约为32.1°，强度较强的峰对应晶面（200） - 2Βιβλιοθήκη Baidu角度约为37.3°，强度较强的峰对应晶面（111）

CaO is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ca2+ is bonded to six equivalent O2- atoms to form a mixture of corner and edge-sharing CaO6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Ca–O bond lengths are 2.42 Å.