This invention is directed to the generation of hydrogen gas from hot water by means of a metallic catalyst such as nickel powder and a chelating agent such as EDTA. Temperature of the water should range from about 60 DEG C. to 150 DEG C. but preferably not above the boiling point of ...
(g) When 0.103 g of Zn(s) is combined with enough HCl to make 50.0 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.5 °C to 23.7 °C. Find ΔHrxn for this reaction as written. (...
Mayers, Y. Xia: Template-engaged replacement reaction: A one-step approach to the large-scale synthesis of metal nanostructures with hollow interiors, Nano Lett. 2(5), 481–485 (2002) Article CAS Google Scholar C.M. Cobley, D.J. Campbell, Y. Xia: Tailoring the optical and catalytic ...
The reaction vessel was immersed in a paraffin oil bath at constant temperature. The evolved H2 gas was measured with water displacement technique for various concentrations of NaBH4, and NaOH (from 0.0 to 0.09 mol/L) at different temperatures at a definite time intervals. Eq. (4) was used ...
However, when mono- or polycarboxylic acids having a pKa<5.3, are heated with solid calcium chloride dihydrate, the above reaction takes place much more rapidly with the evolution of hydrogen chloride. Calcium chloride is also found to induce elctrophilic aromatic iodination without the presence of...
In (c–e), the small droplets on the surface after imbibition are water through the reaction between gallium oxide and HCl vapor. No significant effect of water formation on the wetting was observed. The water could be easily removed by a simple drying process. Full size image Electrical ...
For the formation of 2D Zn5(OH)8(NO3)2·2H2O, Zn2+ions first react with H2O to form [Zn(OH)6]octahedronand [Zn(OH)4]tetrahedronvia a hydrolysis reaction (equation (4),mis the number of H2O). Then, the [Zn(OH)6]octahedronand [Zn(OH)4]tetrahedronseeds assemble into a 2D plane...
摘要: A new efficient synthesis of a wide range of ethers, e.g. (III), (V), (VII), is presented, involving the microwave-assisted reaction of tosylhydrazones with aromatic and aliphatic alcohols.关键词:Alkohole Ether Ketone Phenole Tosylhydrazone DOI: 10.1002/chin.201046047 被引量: 144 ...
Here we report an example of an NTP-activated water–gas shift reaction (WGSR) over a MOF (HKUST-1). Significantly, the exceptional stability of HKUST-1 was sustained under NTP activation and in the presence of water, which led to a high specific rate of 8.8 h−1. We found that ...
Here, we investigated the roles of metal catalysts (Pd, Ni, Cu, and Ag) in the high-temperature reverse water-gas shift (RWGS) reaction using in-situ surface analyses and density functional theory (DFT) calculations. Catalysts were prepared by the deposition-precipitation method with urea ...