Premium
Crystallization of Sodium Bicarbonate in the Presence of Trace Amounts of HPMA
Author(s) -
Sun Weiwei,
Liu Qiaoqiao,
Lin Guihong,
Zhou Jian,
Huang Liangliang,
Liu Chang
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202100234
Subject(s) - crystallization , nucleation , crystal (programming language) , molecule , sodium bicarbonate , adsorption , surface energy , chemistry , crystallography , chemical engineering , inorganic chemistry , materials science , organic chemistry , computer science , engineering , programming language
The effect of trace amounts of hydrolytic polymaleic anhydride (HPMA) on the crystallization of sodium bicarbonate (NaHCO 3 ) has been investigated by molecular simulation and experimental methods. Cooling crystallization experiments show that the trace HPMA molecule effectively promotes the formation of larger NaHCO 3 crystals. Besides, the crystal morphology changes from needle‐like to flake‐like. The determination of the metastable zone width of NaHCO 3 and Atomic Force Microscopy (AFM) observation confirmed that the spontaneous nucleation processes are suppressed. Molecule simulation was used to explore the interaction of HPMA molecule and different crystal faces of NaHCO 3 . It was found that the binding energy between HPMA and NaHCO 3 surface is greater than the corresponding attachment energy of NaHCO 3 surface. The electrostatic interaction energy between double‐bonded oxygen on the HPMA molecule and the Na + of the NaHCO 3 crystal plane plays a dominant role in the additive molecule‘s adsorption on the NaHCO 3 crystal surface. This work suggests that HPMA could serve as an inhibitor of nucleation and impact NaHCO 3 crystallization.