Improved Selectivity and Stability in Methane Dry Reforming by Atomic Layer Deposition on Ni-CeO-ZrO/AlO Catalysts.

Ni can be used as a catalyst for dry reforming of methane (DRM), replacing more expensive and less abundant noble metal catalysts (Pt, Pd, and Rh) with little sacrifice in activity. Ni catalysts deactivate quickly under realistic DRM conditions. Rare earth oxides such as CeO, or as CeO-ZrO-AlO (CZA), are supports that improve both the activity and stability of Ni DRM systems due to their redox activity.

On the Importance of Mental Health in STEM.

From homework to exams to proposal deadlines, STEM academia bears many stressors for students, faculty, and administrators. The increasing prevalence of burnout as an occupational phenomenon, along with anxiety, depression, and other mental illnesses in the STEM community is an alarming sign that help is needed. We describe common mental illnesses, identify risk factors, and outline symptoms.

Correction to "Silica-Supported PdGa Nanoparticles: Metal Synergy for Highly Active and Selective CO-to-CHOH Hydrogenation".

[This corrects the article DOI: 10.1021/jacsau.1c00021.

Silica-Supported PdGa Nanoparticles: Metal Synergy for Highly Active and Selective CO-to-CHOH Hydrogenation.

The direct conversion of CO to CHOH represents an appealing strategy for the mitigation of anthropogenic CO emissions. Here, we report that small, narrowly distributed alloyed PdGa nanoparticles, prepared via surface organometallic chemistry from silica-supported Ga isolated sites, selectively catalyze the hydrogenation of CO to CHOH. At 230 °C and 25 bar, high activity (22.

Lewis Acid Strength of Interfacial Metal Sites Drives CH OH Selectivity and Formation Rates on Cu-Based CO Hydrogenation Catalysts.

CH OH formation rates in CO hydrogenation on Cu-based catalysts sensitively depend on the nature of the support and the presence of promoters. In this context, Cu nanoparticles supported on tailored supports (highly dispersed M on SiO ; M=Ti, Zr, Hf, Nb, Ta) were prepared via surface organometallic chemistry, and their catalytic performance was systematically investigated for CO hydrogenation to CH OH. The presence of Lewis acid sites enhances CH OH formation rate, likely originating from stabilization of formate and methoxy surface intermediates at the periphery of Cu nanoparticles, as evidenced by metrics of Lewis acid strength and detection of surface intermediates.

A Century's Breakthrough in Upcycling Lignocellulosic Biomass: Embion Technologies, Hard-tech Spin-off of the EPFL, Disrupts Nutrition Innovation with Sophisticated, Complex-prebiotics for Immunity.

Embion Technologies SA is a hard-tech spin-off of the EPFL, with a disruptive and novel platform technology that aims to enable the global transition to zero waste via the circular bioeconomy. Embion's initial focus is on transforming low-value food and agricultural industry byproduct streams to affordable next-generation prebiotics - nutrition for human and animal microbiome. We demonstrate here that the company's proprietary technology is simple and flexible and can be applied to a wide variety of feedstocks to extract tailored products with specific fingerprints.

Enhanced CHOH selectivity in CO hydrogenation using Cu-based catalysts generated SOMC from Ga single-sites.

Small and narrowly distributed nanoparticles of copper alloyed with gallium supported on silica containing residual Ga sites can be obtained surface organometallic chemistry in a two-step process: (i) formation of isolated Ga surface sites on SiO and (ii) subsequent grafting of a Cu precursor, [Cu(O Bu)], followed by a treatment under H to generate CuGa alloys. This material is highly active and selective for CO hydrogenation to CHOH. X-ray absorption spectroscopy shows that gallium is oxidized under reaction conditions while copper remains as Cu.

CO Hydrogenation on Cu/Al O : Role of the Metal/Support Interface in Driving Activity and Selectivity of a Bifunctional Catalyst.

Selective hydrogenation of CO into methanol is a key sustainable technology, where Cu/Al O prepared by surface organometallic chemistry displays high activity towards CO hydrogenation compared to Cu/SiO , yielding CH OH, dimethyl ether (DME), and CO. CH OH formation rate increases due to the metal-oxide interface and involves formate intermediates according to advanced spectroscopy and DFT calculations. Al O promotes the subsequent conversion of CH OH to DME, showing bifunctional catalysis, but also increases the rate of CO formation.

Selective Hydrogenation of CO to CH OH on Supported Cu Nanoparticles Promoted by Isolated Ti Surface Sites on SiO.

Small and narrowly distributed Cu nanoparticles, supported on SiO decorated with isolated Ti sites, prepared through surface organometallic chemistry, showed significantly improved CO hydrogenation activity and CH OH selectivity compared to the corresponding Cu nanoparticles supported on SiO . These isolated Lewis acid Ti sites, evidenced by UV/Vis spectroscopy, are proposed to stabilize surface intermediates at the interface between Cu nanoparticles and the support.