scholarly journals In Situ Observation of Polymorphic Transition during Crystallization of Organic Compounds Showing Preferential Enrichment By Means Of Temperature-Controlled Video-Microscopy and Time-Resolved X-ray Powder Diffraction

2016 ◽  
Vol 17 (2) ◽  
pp. 671-676 ◽  
Author(s):  
Hiroki Takahashi ◽  
Sekai Iwama ◽  
Simon Clevers ◽  
Stéphane Veesler ◽  
Gérard Coquerel ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Powder Diffraction ◽  
Polymorphic Transition ◽  
Video Microscopy ◽  
In Situ Observation ◽  
Time Resolved ◽  
X Ray ◽  
Temperature Controlled

Monitoring Polymer-Assisted Mechanochemical Cocrystallisation Through in Situ X-Ray Powder Diffraction

2020 ◽  
Author(s):  
Luzia S. Germann ◽  
Sebastian T. Emmerling ◽  
Manuel Wilke ◽  
Robert E. Dinnebier ◽  
Mariarosa Moneghini ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Powder Diffraction ◽  
Reaction Rate ◽  
Polymer Additives ◽  
Time Resolved ◽  
X Ray

Time-resolved mechanochemical cocrystallisation studies have so-far focused solely on neat and liquid-assisted grinding. Here, we report the monitoring of polymer-assisted grinding reactions using <i>in situ</i> X-ray powder diffraction, revealing that reaction rate is almost double compared to neat grinding and independent of the molecular weight and amount of used polymer additives.<br>

Formation of an intermediate during the hydrothermal synthesis of ULM-5 studied using time-resolved, in situ X-ray powder diffraction

1997 ◽  
pp. 521-522 ◽  
Author(s):  
Robin J. Francis ◽  
Stephen J. Price ◽  
Stephen O’Brien ◽  
Andrew M. Fogg ◽  
Dermot O’Hare ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Powder Diffraction ◽  
Time Resolved ◽  
X Ray

In Situ Analysis of Effects of Transformation Strain on the Austenite Phase during Martenistic Transformation of Cr-Ni Steel

2011 ◽  
Vol 172-174 ◽  
pp. 1255-1260
Author(s):  
Hidenori Terasaki ◽  
Zhang Shouyuan ◽  
Yu Ichi Komizo
Keyword(s):  
Martensitic Transformation ◽  
Reciprocal Lattice ◽  
Transformation Strain ◽  
Observation System ◽  
In Situ Observation ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Lattice Space

A hybrid in-situ observation system has been developed to study the phase transformation behaviour simultaneously in both real and reciprocal lattice space. This paper presents the development of the observation system. Furthermore, as an example of the application of our developed system, martensitic transformation of Cr–Ni steel along a designed thermal cycle was in-situ tracked with the developed system. As a result of analysing the time-resolved X-ray diffraction data for the observed target, our system could directly detect the effect of transformation strain on austenite during martensitic transformation.

scholarly journals Adsorption Features of Various Inorganic Materials for the Drug Removal from Water and Synthetic Urine Medium: A Multi-Technique Time-Resolved In Situ Investigation

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6196
Author(s):  
Enrico Boccaleri ◽  
Cristina Marzetti ◽  
Giorgio Celoria ◽  
Claudio Cassino ◽  
Geo Paul ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Powder Diffraction ◽  
Emerging Contaminants ◽  
Model Compound ◽  
Inorganic Materials ◽  
Ordered Mesoporous Silica ◽  
Time Resolved ◽  
X Ray ◽  
Ordered Mesoporous

Pharmaceutical active compounds, including hundreds of different substances, are counted among the emerging contaminants in waterbodies, whose presence raises a growing concern for the ecosystem. Drugs are metabolized and excreted mainly through urine as an unchanged active ingredient or in the form of metabolites. These emerging contaminants are not effectively removed with the technologies currently in use, making them a relevant environmental problem. This study proposes the treatment of urine and water at the source that can allow an easier removal of dissolved drugs and metabolites. The treatment of synthetic urine, with dissolved ibuprofen as a model compound, by adsorption, using various classes of inorganic materials, such as clays, hierarchical zeolites and ordered mesoporous silica (MCM-41), is presented. A multi-technique approach involving X-ray powder diffraction, solid-state NMR, UV-Vis and Raman spectroscopies was employed to investigate the adsorption process in inorganic adsorbents. Moreover, the uptake, the ensuing competition, the efficiency and selectivity as well as the packing of the model compound in ordered mesoporous silica during the incipient wetness impregnation process were all thoroughly monitored by a novel approach, involving combined complementary time-resolved in situ 1H and 13C MAS NMR spectroscopy as well as X-ray powder diffraction.

In Situ Observation of Pressure-induced Crystallization from Amorphous Calcium Carbonate by Time-resolved X-ray Diffraction

2015 ◽  
Vol 44 (4) ◽  
pp. 434-436 ◽  
Author(s):  
Koji Maruyama ◽  
Hiroyuki Kagi ◽  
Toru Inoue ◽  
Hiroaki Ohfuji ◽  
Toru Yoshino
Keyword(s):  
Calcium Carbonate ◽  
In Situ Observation ◽  
X Ray Diffraction ◽  
Amorphous Calcium Carbonate ◽  
Time Resolved ◽  
X Ray ◽  
Induced Crystallization
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