Category: 33252-30-1

In an article, author is Chen, Shuwei, once mentioned the application of 33252-30-1, Product Details of 33252-30-1, Name is 2-Chloroisonicotinonitrile, molecular formula is C6H3ClN2, molecular weight is 138.5544, MDL number is MFCD00174318, category is pyridine-derivatives. Now introduce a scientific discovery about this category.

Oxidative dehydrogenation of ethylbenzene to styrene with CO2 over Al-MCM-41-supported vanadia catalysts

Catalytic performance of Al-MCM-41-supported vanadia catalysts (V/Al-MCM-41) with different V loading was investigated for oxidative dehydrogenation of ethylbenzene to styrene (ST) with CO2 (CO2-ODEB). For comparison, pure silica MCM-41 was also used as support for vanadia catalyst. The catalysts were characterized by N-2 adsorption, X-ray diffraction (XRD) pyridine-Fourier-transform infrared spectroscopy, H-2-temperature-programmed reduction, thermogravimetric analysis (TGA), UV-Raman, and diffuse reflectance (DR) UV-vis spectroscopy. The results indicate that the catalytic behavior and the nature of V species depend strongly on the V loading and the support properties. Compared with the MCM-41-supported catalyst, the Al-MCM-41-supported vanadia catalyst exhibits much higher catalytic activity and stability along with a high ST selectivity (>98%). The superior catalytic performance of the present V/Al-MCM-41 catalyst can be attributed to the Al-MCM-41 support being more favorable for the high dispersion of V species and the stabilization of active V5+ species. Together with the characterization results of XRD, TGA, and DR UV-Vis spectroscopy, the deep reduction of V5+ into V3+ during CO2-ODEB is the main reason for the deactivation of the supported vanadia catalyst, while the coke deposition has a less important impact on the catalyst stability.

If you are interested in 33252-30-1, you can contact me at any time and look forward to more communication. Product Details of 33252-30-1.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 33252-30-1, Name is 2-Chloroisonicotinonitrile, SMILES is C1=C(C=CN=C1Cl)C#N, belongs to pyridine-derivatives compound. In a document, author is Ashtari-Jafari, Sahar, introduce the new discover, COA of Formula: C6H3ClN2.

Charge-transfer surface-enhanced resonance Raman spectra of benzene-like derivative compounds under the effect of an external electric field

Since the discovery of surface-enhanced resonance Raman scattering (SERS), elucidating the charge-transfer (CT) mechanism has been a challenging and controversial process. Different theoretical models have been proposed to explain the effect of applied electrode potential on SERS-CT, but achieving a high-quality conserved trend of experimental observations and explaining the nature of the selective enhancement of the signals is not a trivial task and the results and conclusions are still in dispute. We investigated recently the performance of time-dependent excited-state gradient approximation under the effects of a uniform finite electric field in a simulation of the experimental spectra of pyridine on an Ag electrode. The singular patterns of the experimental spectra for symmetric and non-symmetric benzene-like derivative compounds and the consistent trends of enhancements of their signals under various electrode potentials motivated us to extend our simulation studies to 4-methylpyridine, pyrazine and pyrimidine molecules on silver metal clusters. For these molecules, selective enhancement and de-enhancement of totally symmetric (upsilon(6a), upsilon(9a) and upsilon(8a)) and non-totally symmetric (upsilon(6b) and upsilon(8b)) modes upon changing the field were obtained and matched well with experimental observations. The selective enhancement of each signal in a zero field was explained by means of excited-state vector gradients and excited-state charge density difference for the S-0 -> S-CT transition. On-field calculations showed slight perturbations of the geometries and electronic structures of the molecules. These on-field calculations also directly affected the magnitude of specific excited-state vector gradients and dimensionless displacements, and moreover the patterns of the spectra. The results of this investigation provided insight into the nature of the selective enhancements of signals and may help researchers propose the selection rules of SERS-CT.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 33252-30-1 is helpful to your research. COA of Formula: C6H3ClN2.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem