A sustainable two-step strategy for oxime synthesis in a neutral KHCO3 medium is reported. Free-state NH2OH is initially synthesized via nitrite electroreduction over a Ketjen-black-supported iron phthalocyanine catalyst, followed by a chemical aldehyde or ketone oximation using the electrochemically synthesized NH2OH.

De Raad van State vernietigt de plannen voor honderden woningen in Amsterdam-Noord, die naast een fabriek van het bedrijf Ketjen hadden moeten verschijnen. Ketjen had zelf de zaak aangespannen, uit angst voor mogelijke klachten van de nieuwe buurtbewoners.

Spatially controlled sulfonated metal–organic polyhedra (SMOP) coating on sulfur-loaded hollow carbon spheres form ultrathin, conformal interfacial barriers that selectively confine soluble polysulfides, stabilize sulfur redox, and suppress shuttle reactions. In contrast, the same SMOP content dispersed within sulfur–Ketjen black aggregates remains buried, unable to effectively mitigate polysulfide shuttling, resulting in persistent shuttle-induced capacity loss and reduced electrochemical stability. ABSTRACT Lithium-sulfur (Li-S) batteries offer a high theoretical specific energy of 2600 Wh kg −1 , yet commercialization remains limited by poor sulfur conductivity and structural instability of sulfur electrodes due to polysulfide (Li-PS) dissolution and shuttling. Here, a sulfonated zirconium-based metal organic polyhedron (SMOP) is introduced as a molecularly dispersible additive for nanoscale interfacial engineering at 3 wt.% in the sulfur–carbon composite. Two placement modes are implemented, where SMOP is assembled as a conformal interfacial coating on sulfur-loaded hollow carbon spheres (SMOP-S-HCS), whereas SMOP is introduced by co-deposition/physical blending with Ketjen black (SMOP-S-KB), producing a dispersed/buried distribution without a defined surface layer. SMOP-S-HCS delivers a low shuttle charge ( Q PS ) of 54.0 mAh g S −1 , whereas SMOP-S-KB exhibits approximately 1.7-fold higher Q PS despite identical SMOP loading during the Li-PS shuttle current measurement. SMOP-S-HCS delivers robust rate capability with discharge capacity ranging from ∼1500 to ∼800 mAh g S −1 from 0.05 to 2C and sustained discharge capacity of 850 mAh g S −1 after 400 cycles at 0.3C. Ex situ sulfur K-edge XAS confirms the effectiveness of SMOP functional barrier against Li-PS shuttling by probing more reversible sulfur speciation and reduced oxidized sulfur buildup during cycling.

Gemeente presenteert plan om tien grootste uitstoters te verduurzamen

Hoe zag het arbeidersbestaan er vroeger uit? Welke impact had de zware industrie op generaties Noorderlingen? Staal Stenen Stemmen brengt de industriële geschiedenis van Noord tot leven.

Ketjen ligt aan het IJ, naast het Hamerstraatkwartier. Amsterdam mikt op grootschalige woningbouw in de wijk, maar de Raad van State blokkeerde dat vorig jaar.

Job title: Continuous Improvement Manager Company: Albemarle Job description: QHSE director and peer QHSE leads for opportunity mining, resource prioritization, and overall Ketjen CI portfolio... development Training and mentoring of group members, QHSE peer resources, and the broader Ketjen organization to utilize CI tools... Expected salary: Location: Houston, TX Job date: Sun, 23 Feb 2025 06:11:39 GMT Apply for the job now!

Job title: Continuous Improvement Manager Company: Albemarle Job description: QHSE director and peer QHSE leads for opportunity mining, resource prioritization, and overall Ketjen CI portfolio... development Training and mentoring of group members, QHSE peer resources, and the broader Ketjen organization to utilize CI tools... Expected salary: Location: Houston, TX Job date: Sun, 23 Feb 2025 05:20:50 GMT Apply for the job now!

Job title: Continuous Improvement Manager Company: Albemarle Job description: QHSE director and peer QHSE leads for opportunity mining, resource prioritization, and overall Ketjen CI portfolio... development Training and mentoring of group members, QHSE peer resources, and the broader Ketjen organization to utilize CI tools... Expected salary: Location: Houston, TX Job date: Sun, 23 Feb 2025 03:43:27 GMT Apply for the job now!