Modélisation de la désactivation du catalyseur Pt-Sn/Al2O3 lors de la déshydrogénation du méthylcyclohexane

Preparation of supported La0.66Sr0.34Ni0.3Co0.7O3 perovskite catalysts and their performance in methane and odorized natural gas combustion

“…To assure efficient mixing, the original helix was replaced by a lighter and more curved helix which was rotated at 33 turns/s. Based on a previous study (Chaouki et al. 1991), the amount of catalyst and the rate of agitation were within the limits required for perfect mixing.…”

“…I n the case of CSTR Berty reactor, perfect mixing was assured by experimental conditions selected on the basis of reactor performance analysis (Chaouki et al, 1991) and given in the previous section.…”

Preparation of supported La0.66Sr0.34Ni0.3Co0.7O3 perovskite catalysts and their performance in methane and odorized natural gas combustion

“…To assure efficient mixing, the original helix was replaced by a lighter and more curved helix which was rotated at 33 turns/s. Based on a previous study (Chaouki et al. 1991), the amount of catalyst and the rate of agitation were within the limits required for perfect mixing.…”

“…I n the case of CSTR Berty reactor, perfect mixing was assured by experimental conditions selected on the basis of reactor performance analysis (Chaouki et al, 1991) and given in the previous section.…”

Liquid Organic Hydrogen Carriers or Organic Liquid Hydrides: 40 Years of History

“…The latter group filled a Canadian patent in 1981 and studied the dehydrogenation of cyclohexane [2,7]. Studies continued until the mid 1990s, with some collaborative contribution from Institut Français du Pétrole concerning the catalyst deactivation studies [8][9][10].…”

Non-precious bimetallic catalysts for selective dehydrogenation of an organic chemical hydride system

“…3 To improve the performance of the cyclohexane or MCH dehydrogenation or to reduce the precious Pt metal content, the promoting effects of a second metal, such as Re, 4 Ni, 5 Au, 6 and Sn, 7 were investigated. The results from these studies indicated that compared to their monometallic counterparts, bimetallic catalysts typically improve the catalytic performance due to the synergetic effects of the enhanced ability for C-H bond breaking and desorption of the aromatic product with a minor ability to break the C-C bond.…”

“…Including the pioneering studies of Sinfelt,2 Pt based catalysts have emerged as the most active and selective catalysts for the dehydrogenation of cycloalkanes due to their ability to selectively functionalize C-H bond cleavage coupled with their poor ability to catalyze the undesired C-C bond breaking (hydrogenolysis). 3 To improve the performance of the cyclohexane or MCH dehydrogenation or to reduce the precious Pt metal content, the promoting effects of a second metal, such as Re, 4 Ni, 5 Au, 6 and Sn, 7 were investigated. The results obtained from these studies indicated that compared to their monometallic counterparts, bimetallic catalysts typically improve the catalytic performance due to the synergistic effects of the enhanced ability for C-H bond breaking and desorption of the aromatic product with a minor ability to break the C-C bond.…”

Preparation of supported La0.66Sr0.34Ni0.3Co0.7O3 perovskite catalysts and their performance in methane and odorized natural gas combustion

“…To assure efficient mixing, the original helix was replaced by a lighter and more curved helix which was rotated at 33 turns/s. Based on a previous study (Chaouki et al. 1991), the amount of catalyst and the rate of agitation were within the limits required for perfect mixing.…”

“…I n the case of CSTR Berty reactor, perfect mixing was assured by experimental conditions selected on the basis of reactor performance analysis (Chaouki et al, 1991) and given in the previous section.…”

Liquid Organic Hydrogen Carriers or Organic Liquid Hydrides: 40 Years of History

“…The latter group filled a Canadian patent in 1981 and studied the dehydrogenation of cyclohexane [2,7]. Studies continued until the mid 1990s, with some collaborative contribution from Institut Français du Pétrole concerning the catalyst deactivation studies [8][9][10].…”

Non-precious bimetallic catalysts for selective dehydrogenation of an organic chemical hydride system

“…3 To improve the performance of the cyclohexane or MCH dehydrogenation or to reduce the precious Pt metal content, the promoting effects of a second metal, such as Re, 4 Ni, 5 Au, 6 and Sn, 7 were investigated. The results from these studies indicated that compared to their monometallic counterparts, bimetallic catalysts typically improve the catalytic performance due to the synergetic effects of the enhanced ability for C-H bond breaking and desorption of the aromatic product with a minor ability to break the C-C bond.…”

“…Including the pioneering studies of Sinfelt,2 Pt based catalysts have emerged as the most active and selective catalysts for the dehydrogenation of cycloalkanes due to their ability to selectively functionalize C-H bond cleavage coupled with their poor ability to catalyze the undesired C-C bond breaking (hydrogenolysis). 3 To improve the performance of the cyclohexane or MCH dehydrogenation or to reduce the precious Pt metal content, the promoting effects of a second metal, such as Re, 4 Ni, 5 Au, 6 and Sn, 7 were investigated. The results obtained from these studies indicated that compared to their monometallic counterparts, bimetallic catalysts typically improve the catalytic performance due to the synergistic effects of the enhanced ability for C-H bond breaking and desorption of the aromatic product with a minor ability to break the C-C bond.…”

Preparation of supported La0.66Sr0.34Ni0.3Co0.7O3 perovskite catalysts and their performance in methane and odorized natural gas combustion

“…To assure efficient mixing, the original helix was replaced by a lighter and more curved helix which was rotated at 33 turns/s. Based on a previous study (Chaouki et al. 1991), the amount of catalyst and the rate of agitation were within the limits required for perfect mixing.…”

“…I n the case of CSTR Berty reactor, perfect mixing was assured by experimental conditions selected on the basis of reactor performance analysis (Chaouki et al, 1991) and given in the previous section.…”

Liquid Organic Hydrogen Carriers or Organic Liquid Hydrides: 40 Years of History

“…The latter group filled a Canadian patent in 1981 and studied the dehydrogenation of cyclohexane [2,7]. Studies continued until the mid 1990s, with some collaborative contribution from Institut Français du Pétrole concerning the catalyst deactivation studies [8][9][10].…”

Non-precious bimetallic catalysts for selective dehydrogenation of an organic chemical hydride system

“…3 To improve the performance of the cyclohexane or MCH dehydrogenation or to reduce the precious Pt metal content, the promoting effects of a second metal, such as Re, 4 Ni, 5 Au, 6 and Sn, 7 were investigated. The results from these studies indicated that compared to their monometallic counterparts, bimetallic catalysts typically improve the catalytic performance due to the synergetic effects of the enhanced ability for C-H bond breaking and desorption of the aromatic product with a minor ability to break the C-C bond.…”

“…Including the pioneering studies of Sinfelt,2 Pt based catalysts have emerged as the most active and selective catalysts for the dehydrogenation of cycloalkanes due to their ability to selectively functionalize C-H bond cleavage coupled with their poor ability to catalyze the undesired C-C bond breaking (hydrogenolysis). 3 To improve the performance of the cyclohexane or MCH dehydrogenation or to reduce the precious Pt metal content, the promoting effects of a second metal, such as Re, 4 Ni, 5 Au, 6 and Sn, 7 were investigated. The results obtained from these studies indicated that compared to their monometallic counterparts, bimetallic catalysts typically improve the catalytic performance due to the synergistic effects of the enhanced ability for C-H bond breaking and desorption of the aromatic product with a minor ability to break the C-C bond.…”