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Portal > Offres > Offre UMR5285-VALMEI-001 - Post-doc (H/F) : Génération d'espèces catalytiques hyperactives en réacteur continu

Post-doc (M/F) : Generation of hyperactive catalytic species in a continuous reactor

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Français - Anglais

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General information

Reference : UMR5285-VALMEI-001
Workplace : VILLEURBANNE
Date of publication : Wednesday, July 17, 2019
Type of Contract : FTC Scientist
Contract Period : 18 months
Expected date of employment : 1 October 2019
Proportion of work : Full time
Remuneration : gross pay of 2643€ minimum/month, according experience
Desired level of education : PhD
Experience required : Indifferent

Missions

The objective of the ANR HYPERCAT project is to find new and generic ways to generate very active catalytic species from Pd and Pt. To reach this goal, our hypothesis is that the metal precursor must be conditioned in a specific environment in order to generate hyperactive species. It is not expected that all the pre-catalysts leading to ppb levels of metal in solution will lead to hyperactice species.
With a variety of precatalysts synthesized by the project's partners, the role of the hired researcher will be to test them in C-C coupling and alkene hydrosilylation reactions. To quantify the level of leaching and identify which species are responsible for the catalytic activity, ICP/MS analyses will be performed on samples withdrawn at specific locations and moments in specific reactors (e.g. compartmented reactor). Besides the synthesis of the pre-catalysts library, the choice of the reactors is thus also a pillar of the project, allowing to decouple the contribution of adsorbed catalytic species and that of species in solution.
As a fall-back solution, in the case where active species are not at the ppb level but ppm, solutions can be found to confine the noble metal in the reactor, not by classical immobilization methods, but by using an appropriate reactor taking profit from the well-known release-and-catch (R&C) mechanism.
At the end of HYPERCAT project, it is expected to have a better knowledge of both Suzuki and alkene hydrosilylation reactions, to build a model allowing to discriminate the contribution of heterogeneous active species and species in solution during a catalytic reaction, and to have a better knowledge of the capabilities of a Reverse-flow reactor to run reactions with pre-catalysts presenting a release-and-catch behavior.

Activities

- Catalytic tests in batch and continuous reactors
- Kinetic and reactor modelling (with MATLAB or equivalent software)
- Exploitation of analytical results (run at LGPC or not)
- Take part to meetings, present the results
- Write publications

Skills

- Reactor engineering (hydrodynamics, mass transfer, mass balance...)
- Heterogeneous and homogeneous catalysis
- Basic knowledge in different analytical techniques (NMR, GC, UV and IR spectroscopies, electronic microscopy...

Work Context

The project will be carried out at LGPC, in relation with partners from Lyon (IRCELYON and C2P2). The work will be performed in close relationship with the hired persons at IRCELYON (1 post-doc) and at C2P2 (1 PhD). It follows a PhD work run at LGPC.

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