Synthesis of Tricyclopentadiene Over Nanoporous MCM-41 Catalysts

Abstract

The objective of this study is to evaluate the catalytic potential of metal oxide/MCM-41 catalysts in dicyclopentadiene oligomerization/dicyclopentadiene oligomer isomerization. Molybdenum oxide, tungsten oxide, and titanium oxide were loaded on MCM-41 using the modified atomic layer deposition method. The amount of the acid site with weak strength has been increased through metal oxide deposition. The oligomer yield in dicyclopentadiene oligomerization/dicyclopentadiene oligomer isomerization did not change with increasing of the amount of acid site. The highest tricyclopentadiene isomer selectivity over the MoO3/MCM-41 catalyst could be attributed to having the highest overall number of acid sites among the catalysts.

Mesoporous Silica Supported Highly Dispersed GaN Catalysts Synthesized by Thermal Atomic Layer Deposition for Propane Dehydrogenation

“…Acid sites are generated with the introduction of GaN through ALD. In the TPD curves of all ALD GaN/MCM‐41 catalysts peaks at around 200 °C and 380 °C are observed, which respectively correspond to weak and medium strength acid sites [54,55] . Moreover, for sample 500‐3c‐GaN/MCM‐41 an extra desorption peak at around 450 °C is observed, which suggests the existence of medium to strong acid sites [56] .…”

Catalytic Conversion of Dicyclopentadiene into High Energy Density Fuel: A Brief Review

“…The mesoporosity of Al-MCM-41(F) and higher Brønsted acid sites lead to a maximum conversion (52%) and selectivity (69%) at 150 °C. 14 Park et al 52 also used the MCM-41 catalyst and impregnated metal oxides such as molybdenum, tungsten, and titanium oxides to convert endo-DCPD. The oligomerization and isomerization reactions occurred at 150 °C.…”

“…Park et al studied the performance of the MMZ H-beta catalyst in a fixed bed reactor (FBR) at 165 °C and 1.01 MPa for the oligomerization of endo-DCPD. They compared this with their earlier work, 52 which was performed in a batch reactor (BR) (150 °C, 4.2 wt % catalysts, and 150 rpm). It was observed that the total oligomers yield was 28.5%, which was close to 29.3% performed in the batch reactor after a 3 h run.…”

Oligomerization of endo-dicyclopentadiene using a mesoporous catalyst in a fixed-bed reactor

“…We call this reaction 'one-pot DCPD oligomerization and TCPD isomerization'. In previous studies, it was reported that some kinds of mesoporous materials [6,10,11], microporous zeolites [6,9], and ionic liquids [12] are useful for DCPD oligomerization or TCPD isomerization in a batch reactor. On the other hand, the results of thermal oligomerization of DCPD at 2 h time-on-stream in a continuous reactor have been reported by Zhang et al [13].…”

“…To the best of our knowledge, a continuous-flow reaction over a heterogeneous catalyst was investigated for the first time in one-pot DCPD oligomerization and TCPD isomerization processes. The mesoporous material prepared from commercial zeolite beta (MMZ Hb ) was utilized as a catalyst [10]. In addition, this study focused on the catalytic performance of the regenerated catalyst in comparison with the fresh catalyst.…”