Jump to main content
Jump to site search


Controllable synthesis of two CaO crystal generations: precursors' synthesis and formation mechanisms

Author affiliations

Abstract

In this study, novel rod-like and block-like CaO crystals were prepared after calcinating three types of CaCO3 precursors containing dumbbell-like, wheat spike-like and microsphere-like morphologies at 1000 °C for 3 h. The CaCO3 precursors were synthesized via the hydrothermal reaction of a CO2 storage-material (CO2SM) with Ca(OH)2 without additional additives. In the preparation process, CO2SM was not only used as a raw material but it also played the role of a directing agent. Moreover, as the major influence factors, CO2SM dosage, reaction temperature, reaction time and Ca2+ concentration were systemically investigated. Subsequently, the possible formation mechanism of the CaCO3 precursors was proposed. Finally, the as-obtained CaO crystals exhibit the adsorption amounts of 14.67, 16.32 and 7.50 mg g−1 for an 8% CO2/N2 mixture at 25 °C.

Graphical abstract: Controllable synthesis of two CaO crystal generations: precursors' synthesis and formation mechanisms

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 Aug 2017, accepted on 02 Nov 2017 and first published on 14 Nov 2017


Article type: Paper
DOI: 10.1039/C7CE01561E
Citation: CrystEngComm, 2017, Advance Article
  •   Request permissions

    Controllable synthesis of two CaO crystal generations: precursors' synthesis and formation mechanisms

    L. Ma, B. Zhao, H. Shi, F. Sha, C. Liu, H. Du and J. Zhang, CrystEngComm, 2017, Advance Article , DOI: 10.1039/C7CE01561E

Search articles by author

Spotlight

Advertisements