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Formation and Phase Selection of CaCO 3 in the Intervention of Lignin Monomer Model Compounds
Author(s) -
Hu Huifeng,
Liang Fugen,
Zhu Haidong,
Zhang Xiumei,
Cui Kecong,
Deb Hridam,
Zhang Yong
Publication year - 2021
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.202000187
Subject(s) - vaterite , fourier transform infrared spectroscopy , crystallization , calcite , ferulic acid , monomer , chemistry , crystal (programming language) , chemical engineering , phase (matter) , lignin , crystallography , materials science , organic chemistry , polymer , mineralogy , chromatography , computer science , engineering , aragonite , programming language
The single crystal form and uncontrollable topography of CaCO 3 in nature severely restrict its product grade and application. Meanwhile, lignin is still not utilized efficiently. In order to improve this, three types of lignin monomer model compounds as p ‐coumaric acid (PCA), ferulic acid (FA), and sinapic acid (SA) are employed to induce the growth of CaCO 3 to investigate the relationship between lignin structure and CaCO 3 crystallization. The synthesized PCA and CaCO 3 composite crystals (PC‐ACCs), FA and CaCO 3 composite crystals (F‐ACCs), and SA and CaCO 3 composite crystals (S‐ACCs) are characterized by field emission scanning electron microscope (FESEM), X‐ray diffraction (XRD), and Fourier transmission infrared spectroscopy (FTIR) to ascertain their molecular structures and crystal information. The growth rule of the acid and CaCO 3 composite crystals (ACCs) induced by the three units is also explored. The results show that the vaterite and calcite of ACCs can be formed selectively. In the presence of PCA, FA, and SA, pH is the key factor on the phase selection of ACCs. The temperature and organic acid type also play important roles on the formation of CaCO 3 . The ACCs present distinguishing surface topographies at different temperatures. The number of methoxyl in the PCA, FA, and SA decides the phase ratio of vaterite and calcite in the ACCs.