Sorption of Atmospheric Gases (N2, O2, Ar, CO2, and H2O) by Silica Aerogel
Adsorption and desorption of atmospheric gases (N 2 , O 2 , Ar, CO 2 , and H 2 O) in silica aerogel is studied. Static parameters of adsorption and kinetic parameters of adsorption and desorption are determined based on the pressure vs time dependence P ( t ) in the buffer vacuum chamber of an exper...
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| Veröffentlicht in: | Atmospheric and oceanic optics 2018-05, Vol.31 (3), p.232-237 |
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| creator | Tikhomirov, B. A. |
| description | Adsorption and desorption of atmospheric gases (N
2
, O
2
, Ar, CO
2
, and H
2
O) in silica aerogel is studied. Static parameters of adsorption and kinetic parameters of adsorption and desorption are determined based on the pressure vs time dependence
P
(
t
) in the buffer vacuum chamber of an experimental setup during adsorption and desorption of gases in a SiO
2
aerogel sample
V
= 42.8 cm
3
in volume and ρ = 0.34 g/cm
3
in density. The ratios of adsorbate molecular density to aerogel molecular density at room temperature
T
= 293 K and equilibrium pressure
P
e
≈ 1 bar are found: γ(N
2
) = (9 ± 3)% (nine N
2
molecules adsorbed by pore surface to 100 N
2
molecules in the gas at equilibrium), γ(O
2
) = (7 ± 3)%, and γ(CO
2
) = (222 ± 8)%; for water vapor, γ(H
2
O) = (5.9 ± 0.3) × 10
4
% at
P
e
= 5.7 mbar. It is ascertained that Ar atoms are not adsorbed by the aerogel. It is suggested to use argon as a “zero” gas in spectroscopy of molecules adsorbed by SiO
2
aerogel to determine the amount of adsorbate in a sample. A sum of two exponential functions of kinetic parameters τ
1
and τ
2
is used to fit the
P
(
t
) dependence, where τ
1
and τ
2
values are estimated during the adsorption and desorption of each gas under study. |
| doi_str_mv | 10.1134/S1024856018030156 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2055961223</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2055961223</sourcerecordid><originalsourceid>FETCH-LOGICAL-c316t-d6b725ba251b5b36a8896448cf6184aa21c0ec8f46ae90deed2d752f14cabd393</originalsourceid><addsrcrecordid>eNp1UEtLw0AQXkTBWv0B3ha8KDQ6s69ujqFoVYo9VM9hs9nUlDYbd9ND_70JFTyIh2EGvhfzEXKNcI_IxcMKgQktFaAGDijVCRkxmEICPOWnZDTAyYCfk4sYNwBKphJH5HXlQ9vVvqG-olm387H9dKG2dG6ii_T2jU3osp8sTOhsOExT0me2vKPFga7qbW0NzVzwa7e9JGeV2UZ39bPH5OPp8X32nCyW85dZtkgsR9UlpSqmTBaGSSxkwZXROlVCaFsp1MIYhhac1ZVQxqVQOleycipZhcKaouy_GZObo28b_NfexS7f-H1o-sicgZSpQsZ4z8IjywYfY3BV3oZ6Z8IhR8iHyvI_lfUadtTEntusXfh1_l_0DSyiaPw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2055961223</pqid></control><display><type>article</type><title>Sorption of Atmospheric Gases (N2, O2, Ar, CO2, and H2O) by Silica Aerogel</title><source>SpringerLink Journals</source><creator>Tikhomirov, B. A.</creator><creatorcontrib>Tikhomirov, B. A.</creatorcontrib><description>Adsorption and desorption of atmospheric gases (N
2
, O
2
, Ar, CO
2
, and H
2
O) in silica aerogel is studied. Static parameters of adsorption and kinetic parameters of adsorption and desorption are determined based on the pressure vs time dependence
P
(
t
) in the buffer vacuum chamber of an experimental setup during adsorption and desorption of gases in a SiO
2
aerogel sample
V
= 42.8 cm
3
in volume and ρ = 0.34 g/cm
3
in density. The ratios of adsorbate molecular density to aerogel molecular density at room temperature
T
= 293 K and equilibrium pressure
P
e
≈ 1 bar are found: γ(N
2
) = (9 ± 3)% (nine N
2
molecules adsorbed by pore surface to 100 N
2
molecules in the gas at equilibrium), γ(O
2
) = (7 ± 3)%, and γ(CO
2
) = (222 ± 8)%; for water vapor, γ(H
2
O) = (5.9 ± 0.3) × 10
4
% at
P
e
= 5.7 mbar. It is ascertained that Ar atoms are not adsorbed by the aerogel. It is suggested to use argon as a “zero” gas in spectroscopy of molecules adsorbed by SiO
2
aerogel to determine the amount of adsorbate in a sample. A sum of two exponential functions of kinetic parameters τ
1
and τ
2
is used to fit the
P
(
t
) dependence, where τ
1
and τ
2
values are estimated during the adsorption and desorption of each gas under study.</description><identifier>ISSN: 1024-8560</identifier><identifier>EISSN: 2070-0393</identifier><identifier>DOI: 10.1134/S1024856018030156</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Adsorbates ; Adsorption ; Aerogels ; Analytical methods ; Argon ; Atmospheric gases ; Carbon dioxide ; Density ; Desorption ; Exponential functions ; Gases ; Lasers ; Molecular chains ; Optical Devices ; Optics ; Parameters ; Photonics ; Physics ; Physics and Astronomy ; Pressure dependence ; Ratios ; Silica ; Silicon dioxide ; Spectroscopy of Ambient Medium ; Time dependence ; Vacuum chambers ; Water vapor ; Water vapour</subject><ispartof>Atmospheric and oceanic optics, 2018-05, Vol.31 (3), p.232-237</ispartof><rights>Pleiades Publishing, Ltd. 2018</rights><rights>Copyright Springer Science & Business Media 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-d6b725ba251b5b36a8896448cf6184aa21c0ec8f46ae90deed2d752f14cabd393</citedby><cites>FETCH-LOGICAL-c316t-d6b725ba251b5b36a8896448cf6184aa21c0ec8f46ae90deed2d752f14cabd393</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1024856018030156$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1024856018030156$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Tikhomirov, B. A.</creatorcontrib><title>Sorption of Atmospheric Gases (N2, O2, Ar, CO2, and H2O) by Silica Aerogel</title><title>Atmospheric and oceanic optics</title><addtitle>Atmos Ocean Opt</addtitle><description>Adsorption and desorption of atmospheric gases (N
2
, O
2
, Ar, CO
2
, and H
2
O) in silica aerogel is studied. Static parameters of adsorption and kinetic parameters of adsorption and desorption are determined based on the pressure vs time dependence
P
(
t
) in the buffer vacuum chamber of an experimental setup during adsorption and desorption of gases in a SiO
2
aerogel sample
V
= 42.8 cm
3
in volume and ρ = 0.34 g/cm
3
in density. The ratios of adsorbate molecular density to aerogel molecular density at room temperature
T
= 293 K and equilibrium pressure
P
e
≈ 1 bar are found: γ(N
2
) = (9 ± 3)% (nine N
2
molecules adsorbed by pore surface to 100 N
2
molecules in the gas at equilibrium), γ(O
2
) = (7 ± 3)%, and γ(CO
2
) = (222 ± 8)%; for water vapor, γ(H
2
O) = (5.9 ± 0.3) × 10
4
% at
P
e
= 5.7 mbar. It is ascertained that Ar atoms are not adsorbed by the aerogel. It is suggested to use argon as a “zero” gas in spectroscopy of molecules adsorbed by SiO
2
aerogel to determine the amount of adsorbate in a sample. A sum of two exponential functions of kinetic parameters τ
1
and τ
2
is used to fit the
P
(
t
) dependence, where τ
1
and τ
2
values are estimated during the adsorption and desorption of each gas under study.</description><subject>Adsorbates</subject><subject>Adsorption</subject><subject>Aerogels</subject><subject>Analytical methods</subject><subject>Argon</subject><subject>Atmospheric gases</subject><subject>Carbon dioxide</subject><subject>Density</subject><subject>Desorption</subject><subject>Exponential functions</subject><subject>Gases</subject><subject>Lasers</subject><subject>Molecular chains</subject><subject>Optical Devices</subject><subject>Optics</subject><subject>Parameters</subject><subject>Photonics</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Pressure dependence</subject><subject>Ratios</subject><subject>Silica</subject><subject>Silicon dioxide</subject><subject>Spectroscopy of Ambient Medium</subject><subject>Time dependence</subject><subject>Vacuum chambers</subject><subject>Water vapor</subject><subject>Water vapour</subject><issn>1024-8560</issn><issn>2070-0393</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1UEtLw0AQXkTBWv0B3ha8KDQ6s69ujqFoVYo9VM9hs9nUlDYbd9ND_70JFTyIh2EGvhfzEXKNcI_IxcMKgQktFaAGDijVCRkxmEICPOWnZDTAyYCfk4sYNwBKphJH5HXlQ9vVvqG-olm387H9dKG2dG6ii_T2jU3osp8sTOhsOExT0me2vKPFga7qbW0NzVzwa7e9JGeV2UZ39bPH5OPp8X32nCyW85dZtkgsR9UlpSqmTBaGSSxkwZXROlVCaFsp1MIYhhac1ZVQxqVQOleycipZhcKaouy_GZObo28b_NfexS7f-H1o-sicgZSpQsZ4z8IjywYfY3BV3oZ6Z8IhR8iHyvI_lfUadtTEntusXfh1_l_0DSyiaPw</recordid><startdate>20180501</startdate><enddate>20180501</enddate><creator>Tikhomirov, B. A.</creator><general>Pleiades Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope></search><sort><creationdate>20180501</creationdate><title>Sorption of Atmospheric Gases (N2, O2, Ar, CO2, and H2O) by Silica Aerogel</title><author>Tikhomirov, B. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-d6b725ba251b5b36a8896448cf6184aa21c0ec8f46ae90deed2d752f14cabd393</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Adsorbates</topic><topic>Adsorption</topic><topic>Aerogels</topic><topic>Analytical methods</topic><topic>Argon</topic><topic>Atmospheric gases</topic><topic>Carbon dioxide</topic><topic>Density</topic><topic>Desorption</topic><topic>Exponential functions</topic><topic>Gases</topic><topic>Lasers</topic><topic>Molecular chains</topic><topic>Optical Devices</topic><topic>Optics</topic><topic>Parameters</topic><topic>Photonics</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Pressure dependence</topic><topic>Ratios</topic><topic>Silica</topic><topic>Silicon dioxide</topic><topic>Spectroscopy of Ambient Medium</topic><topic>Time dependence</topic><topic>Vacuum chambers</topic><topic>Water vapor</topic><topic>Water vapour</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tikhomirov, B. A.</creatorcontrib><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Atmospheric and oceanic optics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tikhomirov, B. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sorption of Atmospheric Gases (N2, O2, Ar, CO2, and H2O) by Silica Aerogel</atitle><jtitle>Atmospheric and oceanic optics</jtitle><stitle>Atmos Ocean Opt</stitle><date>2018-05-01</date><risdate>2018</risdate><volume>31</volume><issue>3</issue><spage>232</spage><epage>237</epage><pages>232-237</pages><issn>1024-8560</issn><eissn>2070-0393</eissn><abstract>Adsorption and desorption of atmospheric gases (N
2
, O
2
, Ar, CO
2
, and H
2
O) in silica aerogel is studied. Static parameters of adsorption and kinetic parameters of adsorption and desorption are determined based on the pressure vs time dependence
P
(
t
) in the buffer vacuum chamber of an experimental setup during adsorption and desorption of gases in a SiO
2
aerogel sample
V
= 42.8 cm
3
in volume and ρ = 0.34 g/cm
3
in density. The ratios of adsorbate molecular density to aerogel molecular density at room temperature
T
= 293 K and equilibrium pressure
P
e
≈ 1 bar are found: γ(N
2
) = (9 ± 3)% (nine N
2
molecules adsorbed by pore surface to 100 N
2
molecules in the gas at equilibrium), γ(O
2
) = (7 ± 3)%, and γ(CO
2
) = (222 ± 8)%; for water vapor, γ(H
2
O) = (5.9 ± 0.3) × 10
4
% at
P
e
= 5.7 mbar. It is ascertained that Ar atoms are not adsorbed by the aerogel. It is suggested to use argon as a “zero” gas in spectroscopy of molecules adsorbed by SiO
2
aerogel to determine the amount of adsorbate in a sample. A sum of two exponential functions of kinetic parameters τ
1
and τ
2
is used to fit the
P
(
t
) dependence, where τ
1
and τ
2
values are estimated during the adsorption and desorption of each gas under study.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1024856018030156</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1024-8560 |
| ispartof | Atmospheric and oceanic optics, 2018-05, Vol.31 (3), p.232-237 |
| issn | 1024-8560 2070-0393 |
| language | eng |
| recordid | cdi_proquest_journals_2055961223 |
| source | SpringerLink Journals |
| subjects | Adsorbates Adsorption Aerogels Analytical methods Argon Atmospheric gases Carbon dioxide Density Desorption Exponential functions Gases Lasers Molecular chains Optical Devices Optics Parameters Photonics Physics Physics and Astronomy Pressure dependence Ratios Silica Silicon dioxide Spectroscopy of Ambient Medium Time dependence Vacuum chambers Water vapor Water vapour |
| title | Sorption of Atmospheric Gases (N2, O2, Ar, CO2, and H2O) by Silica Aerogel |
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