Synergic role of platinum (Pt) and molybdenum trioxide (MoO3) promoted HBEA zeolite towards n-heptane isomerization

Study on the preparation and n-heptane isomerization performance of MoOx-Pd/Ce-MCM-48 catalyst

“…6 showed the FT-IR spectra of Ce-MCM-48 and y MoO x Pd/Ce-M. All catalysts exhibited spectral vibration peaks at 3394, 1631, 1210, 1080, 940, and 810 cm −1 . According to references, 2,5 the hydroxyl vibration peaks of water molecules were located at 3394 and 1631 cm −1 . The external and internal asymmetric stretching of the Si–O–Si framework was attributed to 1210 and 1080 cm −1 .…”

“…5 Aer the introduction of MoO x , the infrared band of silanol groups appeared and the asymmetric tensile strength of Si-O-Si increased, indicating that MoO x groups participated in the molecular sieve framework through interactions with silanol groups. 2 The changes in absorption peaks at 628, 872, and 994 cm With the increase of reaction temperature, the conversion rate of n-heptane increased, with the highest conversion rate of 2% MoO x -Pd/Ce-M. The selectivity for isoheptane decreased with increasing reaction temperature, and high temperatures irreversibly damaged the structure of some catalysts.…”

Kinetic modeling and optimization of n-heptane catalytic isomerization using Box-Behnken experimental design

“…Considerable amounts of these pollutants released into the environment will possibly reason detrimental health effects to organisms. [1][2][3][4][5] Isomerization reaction has received a renewed attention due to high quality petroleum without production of pollutants such as aromatics and also no a decrease in the octane number of gasoline, which is a measure to show its combustion. This reaction involves a catalytic reaction beginning with n-para ns to produce a wide distribution of branched hydrocarbons.…”

“…This reaction involves a catalytic reaction beginning with n-para ns to produce a wide distribution of branched hydrocarbons. [1][2][3][4][5] In this process, the catalyst plays the main role in the progression of reaction. There are several reports about the application of different catalysts in this process.…”

“…The study of reported researches exposes that different parameters can be effected to improve the effectiveness of the kinetics of n-C 7 isomerization reaction: (a) catalytic structural properties; (b) reaction conditions such as temperature and pressure; (c) the ow rates of each reactant; (d) and so on. [1][2][3][4][5][6] Because examining several variables simultaneously requires a lot of time and money, [7] modeling tools were used in combination with experimental methods. One of these multivariate approaches is the Response Surface Method (RSM), which has been applied in experimental design, model building and optimization.…”