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Continuous synthesis of barium sulfate nanoparticles in a new high-speed spinning disk reactor

Jahanshahi Anboohi, J ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1021/acs.iecr.9b02738
  3. Publisher: American Chemical Society , 2019
  4. Abstract:
  5. A new high-speed spinning disk reactor (HSSDR) was proposed and tested successfully. In this regard, barium sulfate (BaSO4) nanoparticles were synthesized using reactive crystallization processes. In this reactor, the rotational disk speed was varied from 5000 to 15 000 rpm. The effects of various design and operating parameters such as the rotational disk speed, feed entrance radius, volumetric flow rate of feed solutions, supersaturation, and free ion ratio were investigated in detail. The mean particle size (MPS) and specifications of the synthesized barium sulfate were investigated using scanning electron microscopy combined with energy-dispersive X-ray spectroscopy and powder X-ray diffraction. Nanoparticles with smaller MPS and narrower particle size distribution (PSD) were synthesized due to an increased micromixing obtained in the HSSDR. Moreover, BaSO4 nanoparticles with the MPS of 16.4 nm and PSD of 4-26 nm were synthesized successfully. This clearly shows that the proposed reactor is a promising contacting device in process intensification. Copyright © 2019 American Chemical Society
  6. Keywords:
  7. Energy dispersive spectroscopy ; Inlet flow ; Nanoparticles ; Particle size ; Particle size analysis ; Rotating disks ; Scanning electron microscopy ; Sulfur compounds ; Synthesis (chemical) ; Contacting devices ; Continuous synthesis ; Energy dispersive X ray spectroscopy ; Mean particle size ; Operating parameters ; Powder X ray diffraction ; Reactive crystallization ; Volumetric flow rate ; Barium sulfate
  8. Source: Industrial and Engineering Chemistry Research ; Volume 58, Issue 36 , 2019 , Pages 16597-16609 ; 08885885 (ISSN)
  9. URL: https://pubs.acs.org/doi/abs/10.1021/acs.iecr.9b02738