open access

https://hdl.handle.net/2115/92933

Effect of carboxylate additives on CaCO3 particle size by precipitation method using scallop shell

英語

XRD pattern

2024-07-25

Universal Wiser Publisher

Materials Plus

154-168

The effect of carboxylate on the particle size of CaCO3 derived from scallop shells was investigated. Shell was dissolved in HCl solution and used as a raw material for CaCO3 particles. As the carboxylate additives, tartrate, oxalate, phthalate, and citrate were employed. The average diameter of particles, Da, was found to be a function of the molar ratio of COO-/CO32-. In the case of adding tartrate and phthalate, Da was varied as having a local minimum value at the molar ratio of 1-5. In the case of adding oxalate and citrate, Da was varied as reaching the minimum value at the molar ratio of 1-2. These sizes were about 0.1-0.25 times smaller than those without adding (21 μm). The characterization of the particles was conducted by SEM images and X-ray diffraction patterns. Particles were found to have a crystal structure of calcite, however, in the case of tartrate and phthalate, calcium tartrate tetrahydrate and vaterite were found.

学術雑誌論文

Accepted Manuscript

Creative Commons Attribution 4.0 International

2972-3299