A perfect fit: Cavity-conform bimetallic Ni/Pd nanoparticles of different composition were generated in the metal–organic framework MIL-101. Experimental evidence and molecular dynamic simulations indicate the existence of mixed bimetallic particles. Pronounced synergistic effects have been observed in liquid-phase catalysis. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
The ion-optical properties of the injector are studied to increase the ion transmission coefficient in the EGP-10-1 charge-exchange accelerator. Injector optimization provides almost complete ion transmission for all conductor voltages.
Passgenaue Katalyse: Kavitätenkonforme dimetallische Ni/Pd-Nanopartikel unterschiedlicher Zusammensetzung wurden im Metall-organischen Gerüst MIL-101 erzeugt. Experimentelle Befunde und MD-Simulationen belegen das Vorliegen durchmischter dimetallischer Partikel, die ausgeprägte synergetische Effekte in der Flüssigphasenkatalyse zeigen.
The goal for the next generation of aircraft in comparison to today’s structures is to reduce the weight and the costs significantly. This objective makes an advancement in the process chain for the manufacturing of composites necessary. Considering cost-effective carbon fibre reinforced parts produced by resin transfer moulding (RTM), textile and preform technologies can contribute to a highly automated manufacturing and low cost process. The project “AUTO-RTM” focuses on the development of technologies for the highly automated production of CFRP parts in the RTM process. Based on the new technologies a concept for a automated RTM production was generated and is currently installed in the workshop of the Technology Center Stade (TZS). After testing the verification of the advantages of automation will be performed.
The new technologies are covering all steps of the process chain:
- cutting
- techniques for handling and adjustment of cuts and preformed components
- preforming
- concept for RTM-moulds
- sealing and closing of the RTM tool
- transfer of the mould in the hot press
- connection with resin and vacuum supply
- RTM process in hot press
- opening of the RTM tool
- handling of the part
- cleaning of the RTM mould
Abstract The utilization of abundantly available elements in key technologies is a promising way to save precious and rare metals. Iron and titanium offer the highest abundance of all transition metals in the earth's crust and their application in catalytic processes is preferable regarding sustainable material development. The photocatalytic decontamination of wastewater using visible‐light‐responsive materials is of high interest due to the demand for clean water and the increasing accumulation of harmful organic compounds resulting from medical or industrial waste. Herein, we report a novel photocatalyst based on the generation of crystalline Fe 2 O 3 and TiO 2 on size‐optimized colloidal metal–organic framework crystallites. The reusable photocatalyst permits the efficient oxidative degradation of pharmaceutical compounds and toxic dyes under visible‐light illumination and without the requirement of additives or noble metals. We observed a higher photocatalytic activity for our Fe 2 O 3 /TiO 2 @MIL‐101 material than for commercially available Fe 2 O 3 , TiO 2 , and TiO 2 (P25).
Abstract Single crystals of orthorhombic Zn 3 (PO 4 ) 3 · 4 H 2 O of optical quality with dimensions up to 12 × 10 × 8 mm were grown from aqueous solutions of ZnSO 4 and NaH 2 PO 4 by controlled diffusion of NH 3 into the solution. The elastic constants c ij and the thermoelastic constants T ij = d c ij /d T , T temperature, were determined from ultrasonic resonance frequencies of thick plates in the range between 5 and 40 MHz and between 250 and 320 K. In respect to the longitudinal elastic stiffness hopeite behaves quasi isotropically, however, the elastic shear stiffness shows a large anisotropy of about a factor 2.5. Above 260 K the shear stiffness c 66 possesses a quite anomalous temperature dependence ( T 66 > 0). Further, the linear thermal expansion reveals a strong anisotropy (α 11 = −3.3, α 22 = 3.4, α 33 = 33 · 10 −6 /K).
Article Asymptotisch exakte Linearisierung des Eingangs-/Ausgangs Verhaltens nichtlinearer Systeme was published on December 1, 1994 in the journal at - Automatisierungstechnik (volume 42, issue 1-12).
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