New approach to immobilization of coal-model compounds on silica using a calcium carboxylate linkage

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In an earlier report, the authors described efforts to study the hydrothermolysis of surface-immobilized coal model compounds by attaching 1-(4{prime}-hydroxyphenyl)-2-phenylethane to the surface of fumed silica via a Si-OAr linkage using procedures developed by Buchanan, Poutsma and coworkers and heating the resultant material (SiO-DPE) under D{sub 2} pressure. Despite the successes noted here, they sought to find a method for constructing links between silica and organic materials which might better survive hydroliquefaction conditions. Attachment of long-chain aliphatic carboxylic acids to silica through Mg{sup ++} or Ca{sup ++} ions is a patented method for silica flotation which they thought might be ... continued below

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5 p.

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Ramakrishnan, S.; Guthrie, R.D.; Britt, P.F.; Buchanan, A.C. III & Davis, B.H. December 31, 1995.

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Description

In an earlier report, the authors described efforts to study the hydrothermolysis of surface-immobilized coal model compounds by attaching 1-(4{prime}-hydroxyphenyl)-2-phenylethane to the surface of fumed silica via a Si-OAr linkage using procedures developed by Buchanan, Poutsma and coworkers and heating the resultant material (SiO-DPE) under D{sub 2} pressure. Despite the successes noted here, they sought to find a method for constructing links between silica and organic materials which might better survive hydroliquefaction conditions. Attachment of long-chain aliphatic carboxylic acids to silica through Mg{sup ++} or Ca{sup ++} ions is a patented method for silica flotation which they thought might be adapted to their purposes. This preprint is a preliminary report on the preparation, thermolysis and hydrothermolysis of materials believed to have the general structure, SiO{sup {minus}}Ca{sup ++}{sup {minus}}O{sub 2}CAr.

Physical Description

5 p.

Notes

OSTI as DE96004388

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  • 210. national meeting of the American Chemical Society (ACS), Chicago, IL (United States), 20-25 Aug 1995

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  • Other: DE96004388
  • Report No.: CONF-950801--19
  • Grant Number: AC05-84OR21400;FG22-91PC91291
  • DOI: 10.2172/188528 | External Link
  • Office of Scientific & Technical Information Report Number: 188528
  • Archival Resource Key: ark:/67531/metadc664650

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  • December 31, 1995

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • May 2, 2016, 4:28 p.m.

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Ramakrishnan, S.; Guthrie, R.D.; Britt, P.F.; Buchanan, A.C. III & Davis, B.H. New approach to immobilization of coal-model compounds on silica using a calcium carboxylate linkage, report, December 31, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc664650/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.