The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
Martin Zidar - One of the best experts on this subject based on the ideXlab platform.
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gas liquid equilibrium operational diagram Graphical Presentation of absorption of so2 in the naoh so2 h2o system taking place within a laboratory absorber
Industrial & Engineering Chemistry Research, 2000Co-Authors: Martin ZidarAbstract:A gas−liquid equilibrium-operational diagram showing the relationships between the concentration of total SO2, combined SO2, and true free SO2, iso-pH, and isopartial pressure of SO2 is presented as a useful tool for Graphically presenting the absorption of SO2 in the NaOH−SO2−H2O system. The Graphical Presentation of the absorption of SO2 on an industrial scale is studied on a laboratory scale using a falling film reactor by taking into account scaled-down criteria for the spray culumns of liquid−gas contactors. An example is given where the bulk and the interfacial compositions along the contactor during the absorption of SO2 into 0.005 M NaOH at T = 298 K are simulated using an absorption model based on the film theory of gas absorption. This is then Graphically presented in a design diagram with the concentration of Na+ as a parameter, which is reconstructed from the gas−liquid operational diagram for the NaOH−SO2−H2O system. The enhancement factor, the overall mass-transfer coefficient, the resistanc...
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Gas−Liquid Equilibrium-Operational Diagram: Graphical Presentation of Absorption of SO2 in the NaOH−SO2−H2O System Taking Place within a Laboratory Absorber
Industrial & Engineering Chemistry Research, 2000Co-Authors: Martin ZidarAbstract:A gas−liquid equilibrium-operational diagram showing the relationships between the concentration of total SO2, combined SO2, and true free SO2, iso-pH, and isopartial pressure of SO2 is presented as a useful tool for Graphically presenting the absorption of SO2 in the NaOH−SO2−H2O system. The Graphical Presentation of the absorption of SO2 on an industrial scale is studied on a laboratory scale using a falling film reactor by taking into account scaled-down criteria for the spray culumns of liquid−gas contactors. An example is given where the bulk and the interfacial compositions along the contactor during the absorption of SO2 into 0.005 M NaOH at T = 298 K are simulated using an absorption model based on the film theory of gas absorption. This is then Graphically presented in a design diagram with the concentration of Na+ as a parameter, which is reconstructed from the gas−liquid operational diagram for the NaOH−SO2−H2O system. The enhancement factor, the overall mass-transfer coefficient, the resistanc...
C. V. Guidotti - One of the best experts on this subject based on the ideXlab platform.
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A new Graphical Presentation and subdivision of potassium micas
Mineralogical Magazine, 2020Co-Authors: G. Tischendorf, Milan Rieder, Hans-jürgen Förster, B. Gottesmann, C. V. GuidottiAbstract:A system based on variation of the octahedrally coordinated cations is proposed for Graphical Presentation and subdivision of tri- and dioctahedral K micas, which makes use of elemental differences (in a.p.f.u.): (Mg - Li) [= mgli] and (Fe tot + Mn + Ti - VI Al) [= feal]. All common true tri- and dioctahedral K micas are shown in a single polygon outlined by seven main compositional points forming its vertices. Sequentially clockwise, starting from Mg 3 (phlogopite), these points are: Mg 2.5 Al 0.5 , Al 2.167 □ 0.833 , Al 1.75 Li 1.25 , Li 2 Al (polylithionite), Fe 2+ 2 Li, and Fe 2+ 3 (annite). Trilithionite (Li 1.5 Al 1.5 ), Li 1.5 Fe 2+ Al 0.5 , Fe 2+ 2 Mg, and Mg 2 Fe 2+ are also located on the perimeter of the polygon. IMA-siderophyllite (Fe 2+ 2 Al) and muscovite (Al 2 □) plot inside. The classification conforms with the IMA-approved mica nomenclature and differentiates among the following mica species according to their position in a diagram consisting of mgli and feal axes plotted orthogonally; trioctahedral: phlogopite, biotite, siderophyllite, annite, zinnwaldite, lepidolite and tainiolite; dioctahedral: muscovite, phengite and celadonite. Potassium micas with [Si]
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a new Graphical Presentation and subdivision of potassium micas
Mineralogical Magazine, 2004Co-Authors: G. Tischendorf, Milan Rieder, Hans-jürgen Förster, B. Gottesmann, C. V. GuidottiAbstract:A system based on variation of the octahedrally coordinated cations is proposed for Graphical Presentation and subdivision of tri- and dioctahedral K micas, which makes use of elemental differences (in a.p.f.u.): (Mg - Li) [= mgli] and (Fe tot + Mn + Ti - VI Al) [= feal]. All common true tri- and dioctahedral K micas are shown in a single polygon outlined by seven main compositional points forming its vertices. Sequentially clockwise, starting from Mg 3 (phlogopite), these points are: Mg 2.5 Al 0.5 , Al 2.167 □ 0.833 , Al 1.75 Li 1.25 , Li 2 Al (polylithionite), Fe 2+ 2 Li, and Fe 2+ 3 (annite). Trilithionite (Li 1.5 Al 1.5 ), Li 1.5 Fe 2+ Al 0.5 , Fe 2+ 2 Mg, and Mg 2 Fe 2+ are also located on the perimeter of the polygon. IMA-siderophyllite (Fe 2+ 2 Al) and muscovite (Al 2 □) plot inside. The classification conforms with the IMA-approved mica nomenclature and differentiates among the following mica species according to their position in a diagram consisting of mgli and feal axes plotted orthogonally; trioctahedral: phlogopite, biotite, siderophyllite, annite, zinnwaldite, lepidolite and tainiolite; dioctahedral: muscovite, phengite and celadonite. Potassium micas with [Si] <2.5 a.p.f.u. including IMA-siderophyllite, KFe 2+ 2 AlAl 2 Si 2 O 10 (OH) 2 , and IMA-eastonite, KMg 2 AlAlSi 2 O 10 (OH) 2 seem not to form in nature. The proposed subdivision has several advantages. All common true, trioctahedral and dioctahedral K micas, whether Li-bearing or Li-free, are shown within one diagram, which is easy to use and gives every mica composition an unambiguously defined name. Mica analyses with Fe 2+ , Fe 3+ , Fe 2+ + Fe 3+ , or Fe tot can be considered, which is particularly valuable for microprobe analyses. It facilitates easy reconstruction of evolutionary pathways of mica compositions during crystallization, a feature having key importance in petrologically oriented research. Equally important, the subdivision has great potential for understanding many of the crystal-chemistry features of the K micas. In turn this may allow one to recognize and discriminate the extent to which crystal chemistry or bulk composition controls the occurrence of some seemingly possible or hypothetical K mica.
G. Tischendorf - One of the best experts on this subject based on the ideXlab platform.
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A new Graphical Presentation and subdivision of potassium micas
Mineralogical Magazine, 2020Co-Authors: G. Tischendorf, Milan Rieder, Hans-jürgen Förster, B. Gottesmann, C. V. GuidottiAbstract:A system based on variation of the octahedrally coordinated cations is proposed for Graphical Presentation and subdivision of tri- and dioctahedral K micas, which makes use of elemental differences (in a.p.f.u.): (Mg - Li) [= mgli] and (Fe tot + Mn + Ti - VI Al) [= feal]. All common true tri- and dioctahedral K micas are shown in a single polygon outlined by seven main compositional points forming its vertices. Sequentially clockwise, starting from Mg 3 (phlogopite), these points are: Mg 2.5 Al 0.5 , Al 2.167 □ 0.833 , Al 1.75 Li 1.25 , Li 2 Al (polylithionite), Fe 2+ 2 Li, and Fe 2+ 3 (annite). Trilithionite (Li 1.5 Al 1.5 ), Li 1.5 Fe 2+ Al 0.5 , Fe 2+ 2 Mg, and Mg 2 Fe 2+ are also located on the perimeter of the polygon. IMA-siderophyllite (Fe 2+ 2 Al) and muscovite (Al 2 □) plot inside. The classification conforms with the IMA-approved mica nomenclature and differentiates among the following mica species according to their position in a diagram consisting of mgli and feal axes plotted orthogonally; trioctahedral: phlogopite, biotite, siderophyllite, annite, zinnwaldite, lepidolite and tainiolite; dioctahedral: muscovite, phengite and celadonite. Potassium micas with [Si]
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a new Graphical Presentation and subdivision of potassium micas
Mineralogical Magazine, 2004Co-Authors: G. Tischendorf, Milan Rieder, Hans-jürgen Förster, B. Gottesmann, C. V. GuidottiAbstract:A system based on variation of the octahedrally coordinated cations is proposed for Graphical Presentation and subdivision of tri- and dioctahedral K micas, which makes use of elemental differences (in a.p.f.u.): (Mg - Li) [= mgli] and (Fe tot + Mn + Ti - VI Al) [= feal]. All common true tri- and dioctahedral K micas are shown in a single polygon outlined by seven main compositional points forming its vertices. Sequentially clockwise, starting from Mg 3 (phlogopite), these points are: Mg 2.5 Al 0.5 , Al 2.167 □ 0.833 , Al 1.75 Li 1.25 , Li 2 Al (polylithionite), Fe 2+ 2 Li, and Fe 2+ 3 (annite). Trilithionite (Li 1.5 Al 1.5 ), Li 1.5 Fe 2+ Al 0.5 , Fe 2+ 2 Mg, and Mg 2 Fe 2+ are also located on the perimeter of the polygon. IMA-siderophyllite (Fe 2+ 2 Al) and muscovite (Al 2 □) plot inside. The classification conforms with the IMA-approved mica nomenclature and differentiates among the following mica species according to their position in a diagram consisting of mgli and feal axes plotted orthogonally; trioctahedral: phlogopite, biotite, siderophyllite, annite, zinnwaldite, lepidolite and tainiolite; dioctahedral: muscovite, phengite and celadonite. Potassium micas with [Si] <2.5 a.p.f.u. including IMA-siderophyllite, KFe 2+ 2 AlAl 2 Si 2 O 10 (OH) 2 , and IMA-eastonite, KMg 2 AlAlSi 2 O 10 (OH) 2 seem not to form in nature. The proposed subdivision has several advantages. All common true, trioctahedral and dioctahedral K micas, whether Li-bearing or Li-free, are shown within one diagram, which is easy to use and gives every mica composition an unambiguously defined name. Mica analyses with Fe 2+ , Fe 3+ , Fe 2+ + Fe 3+ , or Fe tot can be considered, which is particularly valuable for microprobe analyses. It facilitates easy reconstruction of evolutionary pathways of mica compositions during crystallization, a feature having key importance in petrologically oriented research. Equally important, the subdivision has great potential for understanding many of the crystal-chemistry features of the K micas. In turn this may allow one to recognize and discriminate the extent to which crystal chemistry or bulk composition controls the occurrence of some seemingly possible or hypothetical K mica.
Milan Rieder - One of the best experts on this subject based on the ideXlab platform.
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A new Graphical Presentation and subdivision of potassium micas
Mineralogical Magazine, 2020Co-Authors: G. Tischendorf, Milan Rieder, Hans-jürgen Förster, B. Gottesmann, C. V. GuidottiAbstract:A system based on variation of the octahedrally coordinated cations is proposed for Graphical Presentation and subdivision of tri- and dioctahedral K micas, which makes use of elemental differences (in a.p.f.u.): (Mg - Li) [= mgli] and (Fe tot + Mn + Ti - VI Al) [= feal]. All common true tri- and dioctahedral K micas are shown in a single polygon outlined by seven main compositional points forming its vertices. Sequentially clockwise, starting from Mg 3 (phlogopite), these points are: Mg 2.5 Al 0.5 , Al 2.167 □ 0.833 , Al 1.75 Li 1.25 , Li 2 Al (polylithionite), Fe 2+ 2 Li, and Fe 2+ 3 (annite). Trilithionite (Li 1.5 Al 1.5 ), Li 1.5 Fe 2+ Al 0.5 , Fe 2+ 2 Mg, and Mg 2 Fe 2+ are also located on the perimeter of the polygon. IMA-siderophyllite (Fe 2+ 2 Al) and muscovite (Al 2 □) plot inside. The classification conforms with the IMA-approved mica nomenclature and differentiates among the following mica species according to their position in a diagram consisting of mgli and feal axes plotted orthogonally; trioctahedral: phlogopite, biotite, siderophyllite, annite, zinnwaldite, lepidolite and tainiolite; dioctahedral: muscovite, phengite and celadonite. Potassium micas with [Si]
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a new Graphical Presentation and subdivision of potassium micas
Mineralogical Magazine, 2004Co-Authors: G. Tischendorf, Milan Rieder, Hans-jürgen Förster, B. Gottesmann, C. V. GuidottiAbstract:A system based on variation of the octahedrally coordinated cations is proposed for Graphical Presentation and subdivision of tri- and dioctahedral K micas, which makes use of elemental differences (in a.p.f.u.): (Mg - Li) [= mgli] and (Fe tot + Mn + Ti - VI Al) [= feal]. All common true tri- and dioctahedral K micas are shown in a single polygon outlined by seven main compositional points forming its vertices. Sequentially clockwise, starting from Mg 3 (phlogopite), these points are: Mg 2.5 Al 0.5 , Al 2.167 □ 0.833 , Al 1.75 Li 1.25 , Li 2 Al (polylithionite), Fe 2+ 2 Li, and Fe 2+ 3 (annite). Trilithionite (Li 1.5 Al 1.5 ), Li 1.5 Fe 2+ Al 0.5 , Fe 2+ 2 Mg, and Mg 2 Fe 2+ are also located on the perimeter of the polygon. IMA-siderophyllite (Fe 2+ 2 Al) and muscovite (Al 2 □) plot inside. The classification conforms with the IMA-approved mica nomenclature and differentiates among the following mica species according to their position in a diagram consisting of mgli and feal axes plotted orthogonally; trioctahedral: phlogopite, biotite, siderophyllite, annite, zinnwaldite, lepidolite and tainiolite; dioctahedral: muscovite, phengite and celadonite. Potassium micas with [Si] <2.5 a.p.f.u. including IMA-siderophyllite, KFe 2+ 2 AlAl 2 Si 2 O 10 (OH) 2 , and IMA-eastonite, KMg 2 AlAlSi 2 O 10 (OH) 2 seem not to form in nature. The proposed subdivision has several advantages. All common true, trioctahedral and dioctahedral K micas, whether Li-bearing or Li-free, are shown within one diagram, which is easy to use and gives every mica composition an unambiguously defined name. Mica analyses with Fe 2+ , Fe 3+ , Fe 2+ + Fe 3+ , or Fe tot can be considered, which is particularly valuable for microprobe analyses. It facilitates easy reconstruction of evolutionary pathways of mica compositions during crystallization, a feature having key importance in petrologically oriented research. Equally important, the subdivision has great potential for understanding many of the crystal-chemistry features of the K micas. In turn this may allow one to recognize and discriminate the extent to which crystal chemistry or bulk composition controls the occurrence of some seemingly possible or hypothetical K mica.
Hans-jürgen Förster - One of the best experts on this subject based on the ideXlab platform.
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A new Graphical Presentation and subdivision of potassium micas
Mineralogical Magazine, 2020Co-Authors: G. Tischendorf, Milan Rieder, Hans-jürgen Förster, B. Gottesmann, C. V. GuidottiAbstract:A system based on variation of the octahedrally coordinated cations is proposed for Graphical Presentation and subdivision of tri- and dioctahedral K micas, which makes use of elemental differences (in a.p.f.u.): (Mg - Li) [= mgli] and (Fe tot + Mn + Ti - VI Al) [= feal]. All common true tri- and dioctahedral K micas are shown in a single polygon outlined by seven main compositional points forming its vertices. Sequentially clockwise, starting from Mg 3 (phlogopite), these points are: Mg 2.5 Al 0.5 , Al 2.167 □ 0.833 , Al 1.75 Li 1.25 , Li 2 Al (polylithionite), Fe 2+ 2 Li, and Fe 2+ 3 (annite). Trilithionite (Li 1.5 Al 1.5 ), Li 1.5 Fe 2+ Al 0.5 , Fe 2+ 2 Mg, and Mg 2 Fe 2+ are also located on the perimeter of the polygon. IMA-siderophyllite (Fe 2+ 2 Al) and muscovite (Al 2 □) plot inside. The classification conforms with the IMA-approved mica nomenclature and differentiates among the following mica species according to their position in a diagram consisting of mgli and feal axes plotted orthogonally; trioctahedral: phlogopite, biotite, siderophyllite, annite, zinnwaldite, lepidolite and tainiolite; dioctahedral: muscovite, phengite and celadonite. Potassium micas with [Si]
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a new Graphical Presentation and subdivision of potassium micas
Mineralogical Magazine, 2004Co-Authors: G. Tischendorf, Milan Rieder, Hans-jürgen Förster, B. Gottesmann, C. V. GuidottiAbstract:A system based on variation of the octahedrally coordinated cations is proposed for Graphical Presentation and subdivision of tri- and dioctahedral K micas, which makes use of elemental differences (in a.p.f.u.): (Mg - Li) [= mgli] and (Fe tot + Mn + Ti - VI Al) [= feal]. All common true tri- and dioctahedral K micas are shown in a single polygon outlined by seven main compositional points forming its vertices. Sequentially clockwise, starting from Mg 3 (phlogopite), these points are: Mg 2.5 Al 0.5 , Al 2.167 □ 0.833 , Al 1.75 Li 1.25 , Li 2 Al (polylithionite), Fe 2+ 2 Li, and Fe 2+ 3 (annite). Trilithionite (Li 1.5 Al 1.5 ), Li 1.5 Fe 2+ Al 0.5 , Fe 2+ 2 Mg, and Mg 2 Fe 2+ are also located on the perimeter of the polygon. IMA-siderophyllite (Fe 2+ 2 Al) and muscovite (Al 2 □) plot inside. The classification conforms with the IMA-approved mica nomenclature and differentiates among the following mica species according to their position in a diagram consisting of mgli and feal axes plotted orthogonally; trioctahedral: phlogopite, biotite, siderophyllite, annite, zinnwaldite, lepidolite and tainiolite; dioctahedral: muscovite, phengite and celadonite. Potassium micas with [Si] <2.5 a.p.f.u. including IMA-siderophyllite, KFe 2+ 2 AlAl 2 Si 2 O 10 (OH) 2 , and IMA-eastonite, KMg 2 AlAlSi 2 O 10 (OH) 2 seem not to form in nature. The proposed subdivision has several advantages. All common true, trioctahedral and dioctahedral K micas, whether Li-bearing or Li-free, are shown within one diagram, which is easy to use and gives every mica composition an unambiguously defined name. Mica analyses with Fe 2+ , Fe 3+ , Fe 2+ + Fe 3+ , or Fe tot can be considered, which is particularly valuable for microprobe analyses. It facilitates easy reconstruction of evolutionary pathways of mica compositions during crystallization, a feature having key importance in petrologically oriented research. Equally important, the subdivision has great potential for understanding many of the crystal-chemistry features of the K micas. In turn this may allow one to recognize and discriminate the extent to which crystal chemistry or bulk composition controls the occurrence of some seemingly possible or hypothetical K mica.
