Towards highly efficient continuous-flow catalytic carbon dioxide cycloadditions with additively manufactured reactors

Abstract

Developing efficient and sustainable methodologies to transform CO2 into added value chemicals is an important strategy to decarbonize the chemical industry. Here, a new multi-scale approach for the cycloaddition of...

Practice of function-oriented synthesis: high-efficiency CO2 conversion and Knoevenagel condensation by two novel In3-based MOFs with high-density active sites under mild conditions

“…Additionally, the catalytic efficiencies of JLU-MOF116 and 117 surpassed those of other materials, such as ionic liquid 57,58 and g-C 3 N 4 /SBA-15 composites, 59 which were all executed under intense reaction conditions and resulted in low CO 2 conversion efficiencies. Through comparisons of the numbers of quantified catalytic sites per unit cell volume (Table 3), it was determined that JLU-MOF117 possesses a relatively high number of multi-functional catalytic sites among the materials listed, which should be a key factor that contributes to the outstanding CO 2 conversion performance under mild conditions.…”

Recent Developments in Process Digitalisation for Advanced Nanomaterial Syntheses

“…[18] Figure 2D illustrates the velocity profiles obtained by CFD simulations for the helical baffled oscillating reactor: the inclusion of the central rod makes the velocities more consistent across the domain. Furthermore, 3D printing enables the design of structures with tailored surface area for supporting different active catalysts, [19] biocatalysts [20] and other advanced functionalities. [21] This would serve as an alternative to the packed bed reactors used in the industry, trading operational difficulties due to the intrinsic randomness of particle-based beds, like pressure drop, flow maldistribution or non-uniformity of the available catalytic surface, with a more reliable control over reactor parameters that can be digitally validated before initial experiments.…”

Imidazolium based ionic liquid-phase green catalytic reactions

“…225 There are several examples of catalytic reactions (batch and/or flow) promoted by metal catalysts precursors in bare ILs and SILP that generally display higher catalytic performance than those observed without the presence of ILs. Examples of such kind of SILP systems are the classical acid-base catalysts for the carbonatation of epoxides, 228,229 biodiesel production, 230 epoxidation of alkenes, 231,232 methoxy carbonylation of alkenes (using CO 2 ), 233 CO 2 reduction to methane, 234 hydroformylation of alkenes by CO 2 /H 2 235 and hydration of alkyne. 236 Therefore, SILP result in potentially greener and more sustainable processes by improving existing ones or newer designers.…”