Small associative molecule thickeners for ethane, propane and butane

Small associative molecule thickeners for ethane, propane and butane Article history: The abilities of three classes of low molecular weight, metal-based, associative compounds to thicken Received 8 January 2016 high pressure ethane, propane or butane have been assessed with a close clearance falling ball viscome- Received in revised form 15 March 2016 ter. Tributyltin fluoride (TBTF) does not require a heating/cooling cycle to attain dissolution, and at a Accepted 17 March 2016 concentration of 1 wt% in ethane, propane or butane yields 70–100-fold viscosity increases at 25 C. Available online 26 March 2016 Increasing temperature substantially reduces TBTF’s thickening ability. Although hydroxyaluminum di- 2-ethylhexanoate (HAD2EH) is insoluble in ethane, it does dissolve in liquid propane or butane after Keywords: ◦ ◦ mixing at ∼100 C and cooling to temperatures as low as 40 C. HAD2EH induces small viscosity increases Ethane in propane, but is a very effective butane thickener. Increasing temperature causes a relatively small Propane decrease in HAD2EH’s thickening performance. Combining a phosphate ester and a crosslinker in ethane, Butane propane or butane yields a translucent liquid with viscosity increases that are significantly less than those Small molecule thickener attained with TBTF or HAD2EH. Association Viscosity © 2016 Elsevier B.V. All rights reserved. 1. Introduction stranded fluids http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Supercritical Fluids Elsevier

Small associative molecule thickeners for ethane, propane and butane

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0896-8446
eISSN
1872-8162
D.O.I.
10.1016/j.supflu.2016.03.019
Publisher site
See Article on Publisher Site

Abstract

Article history: The abilities of three classes of low molecular weight, metal-based, associative compounds to thicken Received 8 January 2016 high pressure ethane, propane or butane have been assessed with a close clearance falling ball viscome- Received in revised form 15 March 2016 ter. Tributyltin fluoride (TBTF) does not require a heating/cooling cycle to attain dissolution, and at a Accepted 17 March 2016 concentration of 1 wt% in ethane, propane or butane yields 70–100-fold viscosity increases at 25 C. Available online 26 March 2016 Increasing temperature substantially reduces TBTF’s thickening ability. Although hydroxyaluminum di- 2-ethylhexanoate (HAD2EH) is insoluble in ethane, it does dissolve in liquid propane or butane after Keywords: ◦ ◦ mixing at ∼100 C and cooling to temperatures as low as 40 C. HAD2EH induces small viscosity increases Ethane in propane, but is a very effective butane thickener. Increasing temperature causes a relatively small Propane decrease in HAD2EH’s thickening performance. Combining a phosphate ester and a crosslinker in ethane, Butane propane or butane yields a translucent liquid with viscosity increases that are significantly less than those Small molecule thickener attained with TBTF or HAD2EH. Association Viscosity © 2016 Elsevier B.V. All rights reserved. 1. Introduction stranded fluids

Journal

The Journal of Supercritical FluidsElsevier

Published: Aug 1, 2016

References

  • Thermophysical properties of ethane
    Friend, D.G.; Ingham, H.; Fly, J.F.
  • Tri-tert-butylphenol: a highly CO2-soluble sand binder
    Hong, L.; Fidler, E.; Enick, R.; Marentis, R.

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