分岔柱体状碳酸钡粒子的制备

Abstract

Abstract: BaCO3 crystals were prepared by vapor diffusion method with barium chloride and ammonium carbonate as raw materials.The synthesized PEG-b-PEI-SO3H was used as an effective modifier to mediate the crystallization of BaCO3.The influences of aging time，pH，and the PEG-b-PEI-SO3H concentration on the morphologies and size of BaCO3 crystal particles were investigated.The obtained crystals were characterized by scanning electron microscopy（SEM） and X-ray diffraction （XRD）.Results revealed that when the BaCl2 concentration was 20 mmol/L，the polymer mass concentration was 1 g/L，the pH was 7.0，and the reaction time was 1 d，well dispersed barium carbonate with columnar-shaped bifurcation structure could be obtained.

Key words: barium carbonate, crystal control, morphology, mechanism

CLC Number:

TQ132.35

REN Li-Ying, ZHANG Qun, LI Qian-Qian, MAO Xiao-Ming, WU Xin, LIU Ting-Ting. Preparation of barium carbonate with columnar-shaped bifurcation[J]. INORGANICCHEMICALSINDUSTRY, 2015, 47(1): 33-.

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Inorganic Acid-Base-Salt Committee of CIESC

Preparation of barium carbonate with columnar-shaped bifurcation

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