Fused Silica Capillary Reactor and Its Applications

Chou, I‐Ming; Pan, Zhiyan

doi:10.1007/978-94-017-8923-3_6

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…Therefore, the fused silica capillary FIS technique is also incorporated in this review. The fused silica capillary FIS technique was firstly reported by Chou et al [89] in their study on laser Raman probe correction, then was further improved and applied to a series of researches about the properties of geological fluids and fluid inclusions by Chou and his team [5,[90][91][92][93]. The technique was also applied by Chen and Ge [94] for synthesizing hydrocarbonbearing inclusions and employed by Ni et al [95] to synthesize fluid inclusions in the systems of pure H 2 O, pure CO 2 , H 2 O-NaCl, and H 2 O-CO 2 .…”

Section: Fused Silica Capillary Fis Techniquementioning

confidence: 99%

Progresses in Fluid Inclusion Synthesis in Quartz

Chang

Liu

2022

Geofluids

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High-temperature and high-pressure (HTHP) fluids are one of the most extensive participants in geological events. The representative in situ sampling of the HTHP fluids, which is an essential prerequisite for precisely characterizing the HTHP fluids (including compositional and volumetric properties), has been a vital challenge. The technique of fluid inclusion synthesis (FIS) in quartz is one of the only options. It has experienced an almost 40-year development since the standard fracture healing method was invented. Considerable advances in our understanding of physicochemical properties of geological fluids and their roles in many geological processes have been achieved by the use of the FIS techniques. A set of methodologies for fluid inclusion synthesis have been established. Great progresses have also been made, which includes the various pretreatment FIS techniques, the in situ fracturing FIS technique closely associated with the HTHP apparatus, the in situ fracturing refilled FIS technique for large fluid inclusion synthesis at controlled time under unfavorable conditions, and the novel fluid inclusion synthesis by fused silica capillary. Such great many progresses of the quartz FIS techniques have been scattered in the geochemists’ individual research work, and systematic collection and objective evaluation are missing. Consequently, we synthesize existing research, describe and identify the basic operations, discuss the methodological issues like pros and cons, and highlight the problems and prospects of the quartz FIS techniques. Furthermore, it is suggested that in situ and (or) large volume fluid inclusion synthesis will be an important future direction in view of the growing applications of the FIS techniques in combination with microanalytical techniques, especially the Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS). Our review would provide technical guidance to those who wish to investigate HTHP fluids and be beneficial to the future development and applications of the FIS techniques.

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Section: Fused Silica Capillary Fis Techniquementioning

confidence: 99%

Progresses in Fluid Inclusion Synthesis in Quartz

Chang

Liu

2022

Geofluids

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“…The fused silica capillary reactor (FSCR) pioneered by Chou and Pan, 18 which has been widely used in hightemperature and/or high-pressure experiments. [19][20][21][22][23] Its transparency allows for visual observation and online analysis.…”

Section: Introductionmentioning

confidence: 99%

In‐situ experimental study on the hydrolysis and pyrolysis processes of polylactic acid

Zhao,

Zheng,

Chen

et al. 2024

Polymer Engineering & Sci

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In order to better understand the hydrolysis and pyrolysis process of polylactic acid (PLA), we carried out in‐situ experiments by observing the decomposition process of PLA at high temperature (up to 285°C) in both aqueous and anhydrous environments through fused silica capillary reactor (FSCR) combined with Raman spectroscopy analysis. By analyzing the strength change of characteristic peaks of PLA with increasing temperature, it was found that the initial melting temperature of PLA, in both the hydrolysis and pyrolysis processes, is around 170°C. Based on infrared spectroscopy analysis, it was found that the products of PLA pyrolysis are CO2, CH3CHCO, and CH3CHO, indicating that the pyrolysis process of PLA results from a free radical reaction. By comparing the Raman peak area ratios at different peak positions at different temperatures, it was found that the hydrolysis process of PLA mainly involves breaking the COC and CCO bonds of PLA, producing lactic acid, ethanol, CO2, and H2O. The hydrolysis reaction rate of PLA increases with the increase of temperature and exhibits a slow‐fast‐slow S‐shaped trend. The kinetic process of hydrolysis of PLA was well described using the Logistic model. The activation energy for the hydrolysis (Q) of PLA is 18.1 kcal∙mol−1 in the temperature range of 250–285°C. The results of this study provide important insights and crucial parameters for the production and application of PLA.

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Fused Silica Capillary Reactor and Its Applications

Cited by 2 publications

References 21 publications

Progresses in Fluid Inclusion Synthesis in Quartz

Progresses in Fluid Inclusion Synthesis in Quartz

In‐situ experimental study on the hydrolysis and pyrolysis processes of polylactic acid

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