In-situ synchrotron study of the kinetics, thermodynamics, and reaction mechanisms of the hydrothermal crystallization of gyrolite, Ca16Si24O60(OH)8·14H2O

The aim of this work is to fabricate an analcime-C composite membrane by anin situhydrothermal crystallization method and investigate its separation potential by the ultrafiltration of Cr(vi) from aqueous solution.

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In Situ Investigations of Catalysts and Catalytic Reaction Mechanisms

Combinatorial Catalysis and High Throughput Catalyst Design and Testing ◽

10.1007/978-94-011-4329-5_3 ◽

2000 ◽

pp. 99-123

Author(s):

E. G. Derouane ◽

S. B. Derouane-Abd Hamid ◽

I. I. Ivanova ◽

H. He ◽

J. C. Vedrine

Keyword(s):

Catalytic Reaction ◽

Reaction Mechanisms

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Recent Advances of 1,3,5-Triazinanes in Aminomethylation and Cycloaddition Reactions

Synthesis ◽

10.1055/s-0040-1707160 ◽

2020 ◽

Vol 52 (17) ◽

pp. 2469-2482

Author(s):

Jia-Rong Chen ◽

Dong Liang ◽

Wen-Jing Xiao

Keyword(s):

Reaction Mechanisms ◽

Short Review ◽

Cycloaddition Reactions ◽

Recent Advances ◽

Nitrogen Containing Compounds

1,3,5-Trisubstituted 1,3,5-triazinanes (hexahydro-1,3,5-triazines), as stable and readily available surrogates for formaldimines, have found extensive applications for the construction of various nitrogen-containing compounds. The formaldimines, formed in situ from this reagent class, can participate in various aminomethylation and cycloaddition reactions. This short review presents recent advances in this field with emphasis on the conceptual ideas behind the developed methodologies and the reaction mechanisms.1 Introduction2 Aminomethylations with 1,3,5-Triazinanes3 Cycloadditions with 1,3,5-Triazinanes3.1 Use of 1,3,5-Triazinanes as Two-Atom Synthons3.2 Use of 1,3,5-Triazinanes as Three-Atom Synthons3.3 Use of 1,3,5-Triazinanes as Four-Atom Synthons3.4 Use of 1,3,5-Triazinanes as Six-Atom Synthons4 Conclusions

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Reaction mechanisms and in situ process diagnostics

Three-Dimensional Microfabrication Using Two-Photon Polymerization ◽

10.1016/b978-0-12-817827-0.00003-5 ◽

2020 ◽

pp. 175-196

Author(s):

Jonathan B. Mueller ◽

Joachim Fischer ◽

Martin Wegener

Keyword(s):

Reaction Mechanisms ◽

Process Diagnostics

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In Situ Microgravimetric Study of Ion Exchanges in the Ternary Cu-In-S System Prepared by Atomic Layer Deposition

Materials ◽

10.3390/ma13030645 ◽

2020 ◽

Vol 13 (3) ◽

pp. 645

Author(s):

Harold Le Tulzo ◽

Nathanaelle Schneider ◽

Frédérique Donsanti

Keyword(s):

Atomic Layer Deposition ◽

Reaction Mechanisms ◽

Atomic Layer ◽

Side Reactions ◽

Chemical Surface ◽

Copper Indium Disulfide ◽

Layer Deposition ◽

Copper Indium ◽

Gas Phase Ion

Reaction mechanisms during the growth of multinary compounds by atomic layer deposition can be complex, especially for sulfide materials. For instance, the deposition of copper indium disulfide (CuInS2) shows a non-direct correlation between the cycle ratio, the growth per cycle of each binary growth cycles, i.e., CuxS and In2S3, and the film composition. This evidences side reactions that compete with the direct Atomic Layer Deposition (ALD) growth reactions and makes the deposition of large films very challenging. To develop a robust upscalable recipe, it is essential to understand the chemical surface reactions. In this study, reaction mechanisms in the Cu-In-S ternary system were investigated in-situ by using a quartz crystal microbalance system to monitor mass variations. Pure binary indium sulfide (In2S3) and copper sulfide (CuxS) thin film depositions on Al2O3 substrate were first studied. Then, precursors were transported to react on CuxS and In2S3 substrates. In this paper, gas-phase ion exchanges are discussed based on the recorded mass variations. A cation exchange between the copper precursor and the In2S3 is highlighted, and a solution to reduce it by controlling the thickness deposited for each stack of binary materials during the CuInS2 deposition is finally proposed.

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