Diffusivity of coal and petroleum asphaltene monomers by fluorescence correlation spectroscopy
Using fluorescence correlation spectroscopy (FCS) we measure the translational diffusion coefficient of Iino coal asphaltenes and UG8 petroleum asphaltenes dispersed in toluene at extremely low concentrations (0.03–3.0 mg/L). Using a simple scaling argument we compare them with several molecules of...
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| Veröffentlicht in: | Fuel (Guildford) 2007-08, Vol.86 (12), p.2016-2020 |
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| container_issue | 12 |
| container_start_page | 2016 |
| container_title | Fuel (Guildford) |
| container_volume | 86 |
| creator | Guerra, Rodrigo E. Ladavac, Kosta Andrews, A. Ballard Mullins, Oliver C. Sen, Pabitra N. |
| description | Using fluorescence correlation spectroscopy (FCS) we measure the translational diffusion coefficient of Iino coal asphaltenes and UG8 petroleum asphaltenes dispersed in toluene at extremely low concentrations (0.03–3.0
mg/L). Using a simple scaling argument we compare them with several molecules of known size and molecular weight. We find that Iino coal asphaltene molecules – which have a comparatively small alkane fraction – have a diffusion constant of 1.5
×
10
−5
cm
2/s and corresponding hydrodynamic radius close to 0.25
nm: making them significantly smaller than petroleum asphaltenes. |
| doi_str_mv | 10.1016/j.fuel.2006.12.004 |
| format | Article |
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mg/L). Using a simple scaling argument we compare them with several molecules of known size and molecular weight. We find that Iino coal asphaltene molecules – which have a comparatively small alkane fraction – have a diffusion constant of 1.5
×
10
−5
cm
2/s and corresponding hydrodynamic radius close to 0.25
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mg/L). Using a simple scaling argument we compare them with several molecules of known size and molecular weight. We find that Iino coal asphaltene molecules – which have a comparatively small alkane fraction – have a diffusion constant of 1.5
×
10
−5
cm
2/s and corresponding hydrodynamic radius close to 0.25
nm: making them significantly smaller than petroleum asphaltenes.</description><subject>Applied sciences</subject><subject>Coal and petroleum industry by products processing</subject><subject>Coal asphaltene</subject><subject>Constitution and properties of crude oils, shale oils, natural gas and bitumens. Analysis and characteristics</subject><subject>Crude oil, natural gas and petroleum products</subject><subject>Energy</subject><subject>Exact sciences and technology</subject><subject>Fluorescence correlation spectroscopy</subject><subject>Fuel processing. Carbochemistry and petrochemistry</subject><subject>Fuels</subject><subject>Synfuel</subject><issn>0016-2361</issn><issn>1873-7153</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkMFu1DAQhi0EEkvhBTj5AreEcWwnjsQFlbYgVeJCr7Uceyy8cuJgJ5X27fFqK3GD01y-_5-Zj5D3DFoGrP90bP2Ose0A-pZ1LYB4QQ5MDbwZmOQvyQEq1XS8Z6_Jm1KOADAoKQ7k8Wvwfi_hKWwnmjy1yURqFkdX3HKKuM_UlPWXiRsuSOe0pBlzodOJ-rinjMXiYrHGcsZotpAWWla0NVtsWk9vyStvYsF3z_OKPNze_Lz-1tz_uPt-_eW-sUKqrZGTBWaV986qCXznrFSeGxiFmXCQo8JeOce4m7wzqKyb1KTU6K0QAtTI-RX5eOldc_q9Y9n0HOppMZoF0140B5CcwfhfkAk1SDGICnYX0NZXSkav1xxmk0-agT4710d9dq7PzjXrdHVeQx-e202xJvpsFhvK36QaZd93rHKfLxxWJ08Bsy42nEW6kKs87VL415o_HQWa0w</recordid><startdate>20070801</startdate><enddate>20070801</enddate><creator>Guerra, Rodrigo E.</creator><creator>Ladavac, Kosta</creator><creator>Andrews, A. Ballard</creator><creator>Mullins, Oliver C.</creator><creator>Sen, Pabitra N.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7TB</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20070801</creationdate><title>Diffusivity of coal and petroleum asphaltene monomers by fluorescence correlation spectroscopy</title><author>Guerra, Rodrigo E. ; Ladavac, Kosta ; Andrews, A. Ballard ; Mullins, Oliver C. ; Sen, Pabitra N.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c458t-5bc01c8ffdc8b0f2dc58f3a094abe7598e68dd13dbfdae8cdb8b889fc44408933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Applied sciences</topic><topic>Coal and petroleum industry by products processing</topic><topic>Coal asphaltene</topic><topic>Constitution and properties of crude oils, shale oils, natural gas and bitumens. Analysis and characteristics</topic><topic>Crude oil, natural gas and petroleum products</topic><topic>Energy</topic><topic>Exact sciences and technology</topic><topic>Fluorescence correlation spectroscopy</topic><topic>Fuel processing. Carbochemistry and petrochemistry</topic><topic>Fuels</topic><topic>Synfuel</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Guerra, Rodrigo E.</creatorcontrib><creatorcontrib>Ladavac, Kosta</creatorcontrib><creatorcontrib>Andrews, A. Ballard</creatorcontrib><creatorcontrib>Mullins, Oliver C.</creatorcontrib><creatorcontrib>Sen, Pabitra N.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Fuel (Guildford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Guerra, Rodrigo E.</au><au>Ladavac, Kosta</au><au>Andrews, A. Ballard</au><au>Mullins, Oliver C.</au><au>Sen, Pabitra N.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Diffusivity of coal and petroleum asphaltene monomers by fluorescence correlation spectroscopy</atitle><jtitle>Fuel (Guildford)</jtitle><date>2007-08-01</date><risdate>2007</risdate><volume>86</volume><issue>12</issue><spage>2016</spage><epage>2020</epage><pages>2016-2020</pages><issn>0016-2361</issn><eissn>1873-7153</eissn><abstract>Using fluorescence correlation spectroscopy (FCS) we measure the translational diffusion coefficient of Iino coal asphaltenes and UG8 petroleum asphaltenes dispersed in toluene at extremely low concentrations (0.03–3.0
mg/L). Using a simple scaling argument we compare them with several molecules of known size and molecular weight. We find that Iino coal asphaltene molecules – which have a comparatively small alkane fraction – have a diffusion constant of 1.5
×
10
−5
cm
2/s and corresponding hydrodynamic radius close to 0.25
nm: making them significantly smaller than petroleum asphaltenes.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.fuel.2006.12.004</doi><tpages>5</tpages></addata></record> |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Applied sciences Coal and petroleum industry by products processing Coal asphaltene Constitution and properties of crude oils, shale oils, natural gas and bitumens. Analysis and characteristics Crude oil, natural gas and petroleum products Energy Exact sciences and technology Fluorescence correlation spectroscopy Fuel processing. Carbochemistry and petrochemistry Fuels Synfuel |
| title | Diffusivity of coal and petroleum asphaltene monomers by fluorescence correlation spectroscopy |
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