Chengang Ding
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Chengang Ding has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
- Fenghua Chen
School of Resources and Chemical Engineering, Sanming University, Sanming 365004, Fujian, China
1 shared publication - Rongrong Xue
School of Resources and Chemical Engineering, Sanming University, Sanming 365004, Fujian, China
1 shared publication - Wenling Zheng
School of Resources and Chemical Engineering, Sanming University, Sanming 365004, China
1 shared publication
Latest Publications
- Open Access
Macroscopic Dehydration Control of ZnSO4·7H2O: Infrared and Raman Spectra of ZnSO4 Hydrates
With microscopic thermogravimetric analysis, it is difficult to prepare metastable intermediate phases with precise water contents during the dehydration process of hydrates, making it a challenge to acquire their related spectra. The gradual dehydration process of ZnSO4·7H2O proceeds through 7 → 6 → 4 → 1 → 0. Vibrational spectra of ZnSO4 hydrates, especially ZnSO4·6H2O and ZnSO4·4H2O, have not been previously reported. By macroscopic thermogravimetric analysis of ZnSO4·7H2O, the dehydration process can be precisely controlled to produce a variety of ZnSO4 hydrates with specific water contents. In this study, powder X-ray diffraction confirmed the purities of 7H2O, 6H2O, 4H2O, 1H2O and anhydrous ZnSO4. IR and Raman spectra of ZnSO4 hydrates were obtained and compared for the first time. Spectroscopic and crystallographic analysis revealed that structural similarity plays a key role in the 7 → 6 → 4 → 1 → 0 dehydration process. Macroscopic thermogravimetric analysis combined with powder X-ray diffraction is a valuable method for investigating the intermediate phases in the hydrate dehydration process.
Open AccessMacroscopic Dehydration Control of ZnSO4·7H2O: Infrared and Raman Spectra of ZnSO4 Hydrates
With microscopic thermogravimetric analysis, it is difficult to prepare metastable intermediate phases with precise water contents during the dehydration process of hydrates, making it a challenge to acquire their related spectra. The gradual dehydration process of ZnSO4·7H2O proceeds through 7 → 6 → 4 → 1 → 0. Vibrational spectra of ZnSO4 hydrates, especially ZnSO4·6H2O and ZnSO4·4H2O, have not been previously reported. By macroscopic thermogravimetric analysis of ZnSO4·7H2O, the dehydration process can be precisely controlled to produce a variety of ZnSO4 hydrates with specific water contents. In this study, powder X-ray diffraction confirmed the purities of 7H2O, 6H2O, 4H2O, 1H2O and anhydrous ZnSO4. IR and Raman spectra of ZnSO4 hydrates were obtained and compared for the first time. Spectroscopic and crystallographic analysis revealed that structural similarity plays a key role in the 7 → 6 → 4 → 1 → 0 dehydration process. Macroscopic thermogravimetric analysis combined with powder X-ray diffraction is a valuable method for investigating the intermediate phases in the hydrate dehydration process.