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Parametric study of low-pressure premixed ethylene/hydrogen/oxygen flame synthesis of titania nanoparticles and their phases

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Title
Parametric study of low-pressure premixed ethylene/hydrogen/oxygen flame synthesis of titania nanoparticles and their phases
Name (type = personal)
NamePart (type = family)
Halim
NamePart (type = given)
Hadi Dharma
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Hadi Dharma Halim
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RoleTerm (authority = RULIB)
author
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Tse
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Stephen D
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Stephen D Tse
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Advisory Committee
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chair
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Guo
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Zhixiong
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Zhixiong Guo
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Advisory Committee
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RoleTerm (authority = RULIB)
internal member
Name (type = personal)
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Jaluria
NamePart (type = given)
Yogesh
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Yogesh Jaluria
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Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Kear
NamePart (type = given)
Bernard H
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Bernard H Kear
Affiliation
Advisory Committee
Role
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outside member
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Rutgers University
Role
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degree grantor
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School of Graduate Studies
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school
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Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (qualifier = exact)
2018
DateOther (type = degree); (qualifier = exact)
2018-01
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2018
Place
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xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
Parametric study of operating conditions of low-pressure premixed flame (ethylene/hydrogen/oxygen) synthesis using titanium tetra-isopropoxide (TTIP) precursor is investigated, specifically examining as-synthesized nanopowder phase and properties. The Sandia SPIN code is used to simulate the synthesis flow field to guide and compare with experiments. Strategic dilution of inert gases is used to adjust the characteristic flame temperature. As-produced samples are thermally stable without any sign of phase change, as characterized using TGA and DSC, up to 500⁰C. X-ray photoelectron spectroscopy (XPS) indicates Ti4+ valence and presence of carbon (13 – 30 atomic %), with absence of Ti3+, Ti-C, and nitrogen. SEM and TEM confirm mixed micro- and nano-meter features. XRD and SAED divulge srilankite, rutile, and anatase phases produce under different experimental conditions. Temperatures ranging from 1560K to 2650K, ambient pressures from 20 to 40 torr, and burner flow velocities from 150 to 300 cm/s are investigated, producing nanoparticles ranging from 3-10nm ± 3nm with mixed srilankite and rutile titania phases. Oxygen concentration effects are also studied from equivalence ratios of 1.08 to 0.37. Fuel-lean conditions produce anatase-rutile mixed nanopowders, while fuel-rich conditions yielded srilankite-rutile mixed nanopowders. By modifying the composition of the precursor (e.g. by adding ethylene), the phase of the product can be changed, likely because of carbon-doping stabilizing a specific phase.
Subject (authority = RUETD)
Topic
Mechanical and Aerospace Engineering
Subject (authority = ETD-LCSH)
Topic
Titanium dioxide
RelatedItem (type = host)
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Title
Rutgers University Electronic Theses and Dissertations
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ETD
Identifier
ETD_8574
PhysicalDescription
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electronic resource
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application/pdf
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text/xml
Extent
1 online resource (xi, 92 p. : ill.)
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Hadi Dharma Halim
RelatedItem (type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier (type = doi)
doi:10.7282/T390270J
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Rights

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The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Halim
GivenName
Hadi
MiddleName
Dharma
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2017-12-18 23:13:23
AssociatedEntity
Name
Hadi Halim
Role
Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
AssociatedObject
Type
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Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
RightsEvent
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2018-01-31
DateTime (encoding = w3cdtf); (qualifier = exact); (point = end)
2020-01-31
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after January 31st, 2020.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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