scholarly journals Co-loading of Pt and Fe on *BEA Zeolite for Enhanced Isomerization Selectivity in n-Heptane Conversion

2018 ◽  
Vol 47 (11) ◽  
pp. 1428-1430
Author(s):  
Ryosuke Ushiki ◽  
Yoshinori Akada ◽  
Masahiko Matsukata
Keyword(s):  
Bea Zeolite ◽  
Isomerization Selectivity ◽  
Heptane Conversion

scholarly journals n-Heptane isomerization activities of Pt catalyst supported on micro/mesoporous composites

BMC Chemistry ◽  
2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Z. Ghaderi ◽  
M. H. Peyrovi ◽  
N. Parsafard
Keyword(s):  
Nitrogen Adsorption ◽  
Pt Catalyst ◽  
Isomerization Reaction ◽  
X Ray Diffraction ◽  
Hy Zeolite ◽  
Composite Catalysts ◽  
Isomerization Selectivity ◽  
Catalytic Stability ◽  
Adsorption Desorption ◽  
Heptane Conversion

AbstractPt loaded on a series of MCM-48 silica and composites with HZSM-5 zeolite, HY zeolite, or TiO2 has been prepared and studied for n-heptane isomerization reaction at 200–350 °C. The structural characterization, acid distribution, and morphology of these catalysts were characterized by X-ray diffraction, Fourier transform infrared, UV–Vis diffuse reflectance, scanning electron microscope, temperature-programmed desorption of NH3, and nitrogen adsorption–desorption methods. The results show that these catalysts have a good selectivity to multi branched isomers, while producing low aromatic compounds. Also, these new composite catalysts prove the catalytic stability during the time of reaction. The most desirable results, and significantly higher n-heptane conversion and isomerization selectivity were achieved with Pt/MCM48-HZSM5 catalyst.

Performance of Ag-HZSM-5 Zeolite Catalysts in n-heptane Conversion

2017 ◽  
Vol 68 (1) ◽  
pp. 116-120
Author(s):  
Iuliean Vasile Asaftei ◽  
Neculai Catalin Lungu ◽  
Lucian Mihail Birsa ◽  
Ioan Gabriel Sandu ◽  
Laura Gabriela Sarbu ◽  
...  
Keyword(s):  
Aromatic Hydrocarbons ◽  
Metal Content ◽  
Pulse Method ◽  
Acid Strength ◽  
Strength Distribution ◽  
Zeolite Catalysts ◽  
Benzene Toluene ◽  
Acid Strength Distribution ◽  
Silver Cations ◽  
Heptane Conversion

The conversion of n-heptanes into aromatic hydrocarbons benzene, toluene and xylenes (BTX), by the chromatographic pulse method in the temperature range of 673 - 823K was performed over the HZSM-5 and Ag-HZSM-5 zeolites modified by ion exchange with AgNO3 aqueous solutions. The catalysts, HZSM-5 (SiO2/Al2O3 = 33.9), and Ag-HZSM-5 (Ag1-HZSM-5 wt. % Ag1.02, Ag2-HZSM-5 wt. % Ag 1.62; and Ag3-HZSM-5 wt. % Ag 2.05 having different acid strength distribution exhibit a conversion and a yield of aromatics depending on temperature and metal content. The yield of aromatic hydrocarbons BTX appreciably increased by incorporating silver cations Ag+ into HZSM-5.

Ultrafast surfactant-templating of *BEA zeolite: An efficient catalyst for the cracking of polyethylene pyrolysis vapours

2021 ◽  
Vol 412 ◽  
pp. 128566
Author(s):  
Umer Khalil ◽  
Zhendong Liu ◽  
Ce Peng ◽  
Naomichi Hikichi ◽  
Toru Wakihara ◽  
...  
Keyword(s):  
Efficient Catalyst ◽  
Bea Zeolite ◽  
Surfactant Templating

A copper-impregnated BEA zeolite for adsorption and oxidation of aromatic species during vehicle cold starts

2021 ◽  
Vol 287 ◽  
pp. 119951
Author(s):  
Eunhee Jang ◽  
Layoung Choi ◽  
Jinseong Kim ◽  
Yanghwan Jeong ◽  
Hionsuck Baik ◽  
...  
Keyword(s):  
Bea Zeolite ◽  
Aromatic Species ◽  
Cold Starts

Remarkable effect of the preparation method on the state of vanadium in BEA zeolite: Lattice and extra-lattice V species

2009 ◽  
Vol 142 (3-4) ◽  
pp. 185-191 ◽  
Author(s):  
S. Dzwigaj ◽  
E. Ivanova ◽  
R. Kefirov ◽  
K. Hadjiivanov ◽  
F. Averseng ◽  
...  
Keyword(s):  
Preparation Method ◽  
The State ◽  
Remarkable Effect ◽  
Zeolite Lattice ◽  
Bea Zeolite

Particular properties of the coke formed on nano-sponge *BEA zeolite during ethanol-to-hydrocarbons transformation

2016 ◽  
Vol 336 ◽  
pp. 1-10 ◽  
Author(s):  
A. Astafan ◽  
M.A. Benghalem ◽  
Y. Pouilloux ◽  
J. Patarin ◽  
N. Bats ◽  
...  
Keyword(s):  
Bea Zeolite
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