Continuous gas-phase hydroformylation of but-1-ene in a membrane reactor by supported liquid-phase (SLP) catalysis

Abstract

Process intensification is a cornerstone to achieve a significant reduction in energy consumption and CO2 emissions in the chemical industry. In this context, a monolithic membrane reactor combining homogeneous catalytic...

Reusable Catalysts for Hydroformylation‐Based Reactions

“…The same authors [97] reported a similarly supported ionic liquid‐phase (SILP) hydroformylation catalyst, which consists of a Rh‐biphephos complex dissolved in 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide [C 2 C 1 Im][NTf 2 ], immobilized on a mesoporous silicon carbide monolith. This monolith was catalytically active in continuous gas‐phase hydroformylation, being selective towards linear aldehyde formation (99.4 %).…”

Elucidating the ionic liquid distribution in monolithic SILP hydroformylation catalysts by magnetic resonance imaging

“…Continuous, gas-phase hydroformylation of 1-butene was performed at 110 C and 10 bar using an in-house designed reactor module described in detail elsewhere. 16 Gas ows were regulated by mass ow controllers (Bronkhorst) and 1-butene conveyed with an HPLC pump (Smartline 100, Knauer). The uids were dosed in a volume ratio of H 2 : CO : 1-butene ¼ 2 : 2 : 1.…”

“…[12][13][14][15] A novel SILP catalyst system based on a cylindrical SiC monolithic support structure has recently been introduced and demonstrated for 1-butene hydroformylation with the IL-catalyst phase immobilized by wet-impregnation. 16 In such systems, the impregnation and drying procedures have a strong inuence on the nal composition and distribution of the catalyst on the monolith. 17 The weight uptake can control the overall degree of impregnation, but the distribution of the catalyst system on the monolith is challenging to reveal.…”

Tailored monolith supports for improved ultra-low temperature water-gas shift reaction

“…The incorporation of the thin ionic liquid film into the monolithic structure is highly beneficial [15] , as intrinsic kinetics, fluid dynamics, and transport phenomena can be optimized independently in such structured reactors, [16] and modeling, scale-up, and process control are simplified. Very recently, some of us have successfully applied this approach for but-1-ene hydroformylation, [17] showing stable and efficient operation over 40 h time on stream (TOS) using the same SiO 2 -washcoated SiC monoliths [18] as support to immobilize Rhdiphosphite complexes. [19] A high pressure-drop was avoided by the macroporosity as well as the channeled design of the structure, and the SiC provided heat conductivity, mechanical strength, and chemical inertness.…”