scholarly journals ThermoStar for thermal analysis-mass spectrometry

III-Vs Review ◽  
1996 ◽  
Vol 9 (5) ◽  
pp. 72
Keyword(s):  
Mass Spectrometry ◽  
Thermal Analysis

Zeolites Fit For A Crown: Probing Host-Guest Interactions with Thermogravimetric Methods

2018 ◽  
Author(s):  
Asel Sartbaeva ◽  
Paul R. Raithby ◽  
Remi Castaing ◽  
Antony Nearchou
Keyword(s):  
Mass Spectrometry ◽  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Petrochemical Industry ◽  
Rational Use ◽  
New Methodologies ◽  
First Time ◽  
Kinetics Of

Through a combination of thermogravimetry, mass spectrometry and differential thermal analysis, we demonstrate for the first time that all four zeolites show experimental differences in their host-guest interactions with 18C6. In addition, we have estimated the kinetics of 18C6 decomposition, which is a technique that has not been applied to zeolites previously. Using these findings as a toolkit, a more rational use of OSDAs can be utilised to prepare designer zeolites. Furthermore, the new methodologies presented herein can be applied to current zeolites, such as MFI-type zeolites used in the petrochemical industry.

scholarly journals Co-Pyrolysis of Low-Density Polyethylene and Motor Oil—Investigation of the Chemical Interactions between the Components

Recycling ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 33
Author(s):  
Bart Rimez ◽  
Sacha Breyer ◽  
Odile Vekemans ◽  
Benoit Haut
Keyword(s):  
Mass Spectrometry ◽  
Thermal Analysis ◽  
High Resolution ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Motor Oil ◽  
Chemical Interactions ◽  
Analysis Methods ◽  
High Resolution Thermogravimetry

In this work, different thermal analysis methods have been used to study the co-pyrolysis of low-density polyethylene (LDPE) and motor oil. Two kinds of motor oil were considered, a fresh one and a used one. Through the comparison of experimental curves and so-called “theoretical curves”, high-resolution thermogravimetry experiments allowed highlighting interactions between the LDPE and each of the two oils, when they are co-pyrolyzed. While thermogravimetry coupled with mass spectrometry did not give any insights into these interactions, pyrolysis coupled to gaseous chromatograph and mass spectrometry allowed identifying aldehydes in the products of the co-pyrolysis of LDPE and each of the two oils. These aldehydes were not observed during the pyrolysis of the LDPE or the oils alone. On the basis of these results, various explanations for the formation of these aldehydes are proposed.

Characterization of Polyethylene Branching by Thermal Analysis-Photoionization Mass Spectrometry

2020 ◽  
Vol 31 (11) ◽  
pp. 2362-2369
Author(s):  
Christoph Grimmer ◽  
Lukas Friederici ◽  
Thorsten Streibel ◽  
Ahmad Naim ◽  
Virginie Cirriez ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Thermal Analysis ◽  
Photoionization Mass Spectrometry

Description of Steam Cracker Fouling and Coking Residues by Thermal Analysis-Photoionization Mass Spectrometry

2019 ◽  
Vol 33 (11) ◽  
pp. 11592-11602 ◽  
Author(s):  
Christoph Grimmer ◽  
Christopher P. Rüger ◽  
Thorsten Streibel ◽  
Fabrice Cuoq ◽  
Gerard Kwakkenbos ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Thermal Analysis ◽  
Photoionization Mass Spectrometry ◽  
Steam Cracker

scholarly journals Synthesis and structural characterization of amino-functionalized polysaccharides

2009 ◽  
Vol 7 (1) ◽  
pp. 66-73 ◽  
Author(s):  
Ioana Sisu ◽  
Valentina Udrescu ◽  
Corina Flangea ◽  
Sorin Tudor ◽  
Nicolae Dinca ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Thermal Analysis ◽  
Reductive Amination ◽  
Average Molecular Weight ◽  
Polymer Surface ◽  
Building Blocks ◽  
Collision Induced Dissociation ◽  
Amination Reaction ◽  
Composition And Structure

AbstractA variety of carbohydrates, in particular polysaccharides can be subjected to chemical modification to obtain derivatives with amphiphilic properties, which enable biochemical or biological reactions at the polymer surface. In the present work, a polydisperse maltodextrin mixture of average molecular weight 3000 was coupled with 1,6-hexamethylenediamine (HMD) via reductive amination reaction. Resulting products were characterized by thermal analysis and positive nanoelectrospray quadrupole time-of-flight (Q-TOF) mass spectrometry (MS) and tandem mass spectrometry (MS/MS). Both thermal analysis and MS screening confirmed the formation of the HMD-polysaccharide coupling products. Moreover, HMD-linked polysaccharide chains containing 2 to 26 glucose building blocks were identified by nanoESI Q-TOF MS. MS/MS fragmentation using collision-induced dissociation (CID) at low ion acceleration energies provided strong evidence for HMD-maltodextrin linkage formation and the set of sequence ions diagnostic for the composition and structure of a HMD-linked chain containing 18 glucose residues.

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