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Molecular Beam Methods for Pyrolitic...

Karpovych, Valeriia,

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Molecular Beam Methods for Pyrolitic Chemistry: Pyrolysis Products of Composite Solid Propellants and Biofuel /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Molecular Beam Methods for Pyrolitic Chemistry: Pyrolysis Products of Composite Solid Propellants and Biofuel // Valeriia Karpovych.
作者:	Karpovych, Valeriia,
面頁冊數:	1 electronic resource (153 pages)
附註:	Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
Contained By:	Dissertations Abstracts International86-12B.
標題:	Physical chemistry. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31841152
ISBN:	9798280700598

Molecular Beam Methods for Pyrolitic Chemistry: Pyrolysis Products of Composite Solid Propellants and Biofuel /
Karpovych, Valeriia,

Molecular Beam Methods for Pyrolitic Chemistry: Pyrolysis Products of Composite Solid Propellants and Biofuel /Valeriia Karpovych. - 1 electronic resource (153 pages)

Source: Dissertations Abstracts International, Volume: 86-12, Section: B.

Pyrolysis is central to fuel performance and renewable fuel production. Solid fuel rockets have high priority in space and military applications. For their performance, it is important to know the pyrolysis products of the fuel components that are combusted. However, studies by traditional methods are completely inadequate to produce heating on the appropriate timescale of 10.

English

ISBN: 9798280700598Subjects--Topical Terms:

1981412
Physical chemistry.
Subjects--Index Terms:

Pyrolysis

Molecular Beam Methods for Pyrolitic Chemistry: Pyrolysis Products of Composite Solid Propellants and Biofuel /
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100 1 $a Karpovych, Valeriia, $e author. $3 3824915
245 1 0 $a Molecular Beam Methods for Pyrolitic Chemistry: Pyrolysis Products of Composite Solid Propellants and Biofuel / $c Valeriia Karpovych.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2025
300 $a 1 electronic resource (153 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
500 $a Advisors: Sulkes, Mark Committee members: Burin, Alexander L.; McSkimming, Alexander J.; Koplitz, Brent D.
502 $b Ph.D. $c Tulane University $d 2025.
520 $a Pyrolysis is central to fuel performance and renewable fuel production. Solid fuel rockets have high priority in space and military applications. For their performance, it is important to know the pyrolysis products of the fuel components that are combusted. However, studies by traditional methods are completely inadequate to produce heating on the appropriate timescale of 10.
520 $a 6 ºC/s, leading to misleading product results. Regarding biofuel, a recent DOE estimate is that carbon neutral fuel from woody biomass could displace >20 % of petroleum use. The one problem complicating pyrolysis of feedstocks is production of PAHs, leading to char and the poisoning of catalysts and production equipment. Standard analytical techniques such as py-GC-MS are powerful for species identification/quantification, but their detection timescales are long (s or greater), that cannot access early ongoing chemistry and have limited ability to detect PAHs.To address these experimental needs, we have repurposed molecular beam methods in two respects:(1) Chemistry timescale. Heating is done by laser pulse surface heating at the front end of supersonic gas expansions. High (>1000 K) temperatures can be attained, with total gas expansion timescales of µs. We can use benzylpyridinium "thermometer" ions to characterize pyrolysis product temperatures.(2) Sensitive, selective aromatics/PAH detection. This is accomplished via resonant two photon ionization (REMPI).These combined methods have not been used and developed in other groups. Part of our efforts are, necessarily, method refinement and development.Two systems, solid rocket fuel based on hydroxyl terminated polybutadiene (HTPBs), and a lignin as a representative of biofuel are of primary interest in this project.
546 $a English
590 $a School code: 0235
650 4 $a Physical chemistry. $3 1981412
650 4 $a Petroleum engineering. $3 566616
650 4 $a Polymer chemistry. $3 3173488
650 4 $a Alternative energy. $3 3436775
653 $a Pyrolysis
653 $a Renewable fuels
653 $a Benzylpyridinium
653 $a Thermometer
653 $a Solid propellants
690 $a 0494
690 $a 0765
690 $a 0495
690 $a 0363
710 2 $a Tulane University. $b Chemistry. $e degree granting institution. $3 3824916
720 1 $a Sulkes, Mark $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 86-12B.
790 $a 0235
791 $a Ph.D.
792 $a 2025
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31841152