Ru-containing magnetic yolk–shell structured nanocomposite: a powerful, recoverable and highly durable nanocatalyst

Abstract

Preparation, characterization and catalytic application of a novel yolk–shell structured magnetic mesoporous organosilica nanocomposite are presented.

Bridging and terminal hydroxyl groups of Zr(OH)4 as active sites for the ultraselective transformation of biomass-based alcohols

“…This creates a serious economic burden restricting their industrial applications. [25][26][27][28][29][30] As for the dehydration of 1-phenyethanol, most reported works are based on acid catalysts or acids causing equipment corrosion and environmental pollution. [31][32][33][34][35] In addition, due to the different reaction mechanisms of the formation of acetophenone and styrene from 1-phenylethanol, using the same catalyst for regulating the selectivity of the two reactions is a great challenge and has not been reported.…”

Amine-containing yolk-shell structured magnetic organosilica nanocomposite as a highly efficient catalyst for the Knoevenagel reaction

“…Frontiers in Chemistry frontiersin.org with Fe 3 O 4 core and PMO shells are Fe 3 O 4 @SiO 2 @PMO (Mirbagheri et al, 2021), Fe 3 O 4 -YS-PMO (Wei et al, 2016), YS-Fe 3 O 4 @Au@PMO (Liu et al, 2019), Fe 3 O 4 @mSiO 2 (Li Y. et al, 2019), Fe 3 O 4 @PMO-NH 2 (Rosso et al, 2020) and Fe 3 O 4 @MePMO-IL/Pd (Shaker and Elhamifar, 2020).…”

“…These nanocomposites have been used in various fields such as biomedicine, battery development, fuel cell technology, sensor technology, gene therapy, and nanocatalysis ( Li H. et al, 2018 ; Li J. et al, 2018 ; Lin et al, 2018 ; Wang et al, 2018 ; Li X.-P. et al, 2019 ; Yu K. et al, 2019 ; Zhang et al, 2019 ). Some of recently reported nanocomposites with Fe 3 O 4 core and PMO shells are Fe 3 O 4 @SiO 2 @PMO ( Mirbagheri et al, 2021 ), Fe 3 O 4 -YS-PMO ( Wei et al, 2016 ), YS-Fe 3 O 4 @Au@PMO ( Liu et al, 2019 ), Fe 3 O 4 @mSiO 2 ( Li Y. et al, 2019 ), Fe 3 O 4 @PMO-NH 2 ( Rosso et al, 2020 ) and Fe 3 O 4 @MePMO-IL/Pd ( Shaker and Elhamifar, 2020 ).…”

Improved catalytic performance by changing surface and textural properties of Ru supported bifunctional periodic mesoporous organosilicas in aerobic oxidation of alcohols

“…In recent years, PMO materials have successfully been applied as support for the deposition of various metal species, and the resulting catalysts have shown promising performance in the aerobic oxidation of alcohols. [85][86][87][88][89] Our research group has also been extensively engaged in this research area on the design and synthesis of a series of either monofunctional or bifunctional PMO materials containing incorporated ionic liquid groups into their structure (PMO-ILs) and employing them as catalytic support in various organic transformations, including oxidation of alcohols. 12,25,44,56,90 We have especially focused on the concept of balancing the hydrophobicity/hydrophilicity feature of the pore surface of PMO materials and its influence on the performance as well as the selectivity changeover of these materials in some typical organic transformations.…”

“…In recent years, PMO materials have successfully been applied as support for the deposition of various metal species, and the resulting catalysts have shown promising performance in the aerobic oxidation of alcohols. 85–89…”