以可溶性淀粉为晶型调控剂制备多孔球形碳酸钙

doi:10.11962/1006-4990.2020-0374

Abstract

Abstract:

Porous calcium carbonate microspheres with aragonite crystal form were prepared by simple double decomposition reaction,using calcium chloride and sodium carbonate as synthetic reagents and soluble starch（SS） as crystallization con-troller.Through the single-factor experiment,effects of the adding amount of soluble starch,the dropping speed of sodium carbonate solution,and the amount-of-substance ratio of calcium chloride to sodium carbonate on calcium carbonate morphology and crystal form were investigated.The crystal form and morphology were characterized by X-ray diffractometer（XRD） and scanning electron microscope（SEM）.The results showed that when the adding amount of SS was 0.5 g,the dropping speed was 1.5 mL/min,and the amount-of-substance ratio of calcium chloride to sodium carbonate was 1∶1,porous vaterite calcium carbonate with partical size of 4~5 μm could be prepared.

Key words: calcium carbonate, vaterite, calcium chloride, sodium carbonate, crystallization controller

CLC Number:

TQ132.32

Hu Caixia,Hu Chenxin,Peng Jianlong,Zhong Xing. Preparation of porous spherical calcium carbonate with soluble starch as crystallization controller[J]. Inorganic Chemicals Industry, 2021, 53(5): 51-55.

Figures/Tables 7

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Inorganic Acid-Base-Salt Committee of CIESC

Preparation of porous spherical calcium carbonate with soluble starch as crystallization controller

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