Sulfur speciation monitored in situ with solid state gold amalgam voltammetric microelectrodes: polysulfides as a special case in sediments, microbial mats and hydrothermal vent waters

2001 ◽  
Vol 3 (1) ◽  
pp. 61-66 ◽  
Author(s):  
George W. Luther, III ◽  
Brian T. Glazer ◽  
Laura Hohmann ◽  
Jeannette I. Popp ◽  
Martial Taillefert ◽  
...  
Keyword(s):  
Solid State ◽  
Hydrothermal Vent ◽  
Microbial Mats ◽  
Sulfur Speciation ◽  
Special Case

Development and Application of a New Mobile pH Calibrator for Real-Time Monitoring of pH in Diffuse Flow Hydrothermal Vent Fluids

2016 ◽  
Vol 50 (2) ◽  
pp. 37-47 ◽  
Author(s):  
Chunyang Tan ◽  
Kang Ding ◽  
William E Seyfried
Keyword(s):  
Solid State ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
Ph Sensor ◽  
Pressure Effects ◽  
Diffuse Flow ◽  
Calibration Methods ◽  
Ne Pacific ◽  
Axial Seamount

AbstractIn situ measurement of pH in diffuse flow hydrothermal vent fluids is necessary to investigate the feedback between geochemical and biochemical processes. Accurate pH determination has been unusually challenging owing to temperature and pressure effects that place severe constraints on the performance of a wide variety of pH sensor systems. In this paper, we describe a newly developed mobile pH calibrator (MpHC), which makes use of In situ calibration protocols that enhance the accuracy of pH measurement and monitoring on the ocean floor at deep-sea hydrothermal vents. The MpHC combines the physically robust and highly sensitive iridium solid-state pH electrode with a flow control system to perform 2-point calibration with on-board pH buffer solutions. The small size and novel design of the sensor probe allow more effective access to seafloor hydrothermal vent fluids and their associated sulfide structures and biological communities. The MpHC is capable of In situ deployment by submersible via ICL (inductively couple link) communication around hydrothermal vents at pressures and temperatures up to 45 MPa and 100°C, respectively. In this paper, we also present results of In situ calibration methods used to correct the standard potential and slope (mV/pH) of the solid-state electrode for temperature effects. The MpHC has been deployed most recently using the submersible Alvin during cruise AT26-17 to Axial Seamount and Main Endeavour Field, Juan De Fuca Ridge in the NE Pacific. With In situ calibration functionality, the MpHC offers the prospect of more successful longer-term measurements in keeping with power availability provided by cabled seafloor observatories coming online in the NE Pacific.

The Nature of Chemisorbed CO2 in Zeolite A

2019 ◽  
Author(s):  
Przemyslaw Rzepka ◽  
Zoltán Bacsik ◽  
Andrew J. Pell ◽  
Niklas Hedin ◽  
Aleksander Jaworski
Keyword(s):  
Solid State ◽  
Ir Spectroscopy ◽  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Surface Coverage ◽  
Gas Mixtures ◽  
Mas Nmr ◽  
Significant Fraction ◽  
Zeolite A

Formation of CO<sub>3</sub><sup>2-</sup> and HCO<sub>3</sub><sup>-</sup> species without participation of the framework oxygen atoms upon chemisorption of CO<sub>2</sub> in zeolite |Na<sub>12</sub>|-A is revealed. The transfer of O and H atoms is very likely to have proceeded via the involvement of residual H<sub>2</sub>O or acid groups. A combined study by solid-state <sup>13</sup>C MAS NMR, quantum chemical calculations, and <i>in situ</i> IR spectroscopy showed that the chemisorption mainly occurred by the formation of HCO<sub>3</sub><sup>-</sup>. However, at a low surface coverage of physisorbed and acidic CO<sub>2</sub>, a significant fraction of the HCO<sub>3</sub><sup>-</sup> was deprotonated and transformed into CO<sub>3</sub><sup>2-</sup>. We expect that similar chemisorption of CO<sub>2</sub> would occur for low-silica zeolites and other basic silicates of interest for the capture of CO<sub>2</sub> from gas mixtures.

In-situ formation of LiF-rich composite interlayer for dendrite-free all-solid-state lithium batteries

2021 ◽  
Vol 411 ◽  
pp. 128534
Author(s):  
Jianli Wang ◽  
Zhao Zhang ◽  
Hangjun Ying ◽  
Gaorong Han ◽  
Wei-Qiang Han
Keyword(s):  
Solid State ◽  
Lithium Batteries ◽  
In Situ Formation

In-situ thermal polymerization boosts succinonitrile-based composite solid-state electrolyte for high performance Li-metal battery

2021 ◽  
Vol 496 ◽  
pp. 229861
Author(s):  
Chuankai Fu ◽  
Yulin Ma ◽  
Pengjian Zuo ◽  
Wei Zhao ◽  
Weichao Tang ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Thermal Polymerization ◽  
Solid State Electrolyte ◽  
Composite Solid

Solid‐State NMR and MRI Spectroscopy for Li/Na Batteries: Materials, Interface, and In Situ Characterization

2021 ◽  
pp. 2005878
Author(s):  
Xiangsi Liu ◽  
Ziteng Liang ◽  
Yuxuan Xiang ◽  
Min Lin ◽  
Qi Li ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
In Situ Characterization

In Situ Synthesis of a Li6.4La3Zr1.4Ta0.6O12/Poly(vinylene carbonate) Hybrid Solid-State Electrolyte with Enhanced Ionic Conductivity and Stability

2021 ◽  
Vol 4 (9) ◽  
pp. 9368-9375
Author(s):  
Xingyu Huang ◽  
Jinfeng Wu ◽  
Xuewei Wang ◽  
Yue Tian ◽  
Fei Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
In Situ Synthesis ◽  
Vinylene Carbonate ◽  
Solid State Electrolyte

scholarly journals 13C Solid-State NMR Analysis of the Chemical Structure in Petroleum Coke during Idealized In Situ Combustion Conditions

ACS Omega ◽  
2021 ◽  
Author(s):  
Jingjun Pan ◽  
Guangzhi Liao ◽  
Rigu Su ◽  
Sen Chen ◽  
Zhengmao Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Petroleum Coke ◽  
Solid State Nmr ◽  
Chemical Structure ◽  
Nmr Analysis ◽  
In Situ Combustion

scholarly journals Characterization and Quantification of Depletion and Accumulation Layers in Solid‐State Li + ‐Conducting Electrolytes Using In Situ Spectroscopic Ellipsometry

2021 ◽  
pp. 2100585
Author(s):  
Leon Katzenmeier ◽  
Leif Carstensen ◽  
Simon J. Schaper ◽  
Peter Müller‐Buschbaum ◽  
Aliaksandr S. Bandarenka
Keyword(s):  
Solid State ◽  
Spectroscopic Ellipsometry
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