High-pressure photoacoustic calorimetry of Chromium hexacarbonyl (cas 13007-92-6): volumes of heptane displacement from chromium pentacarbonyl heptane

Add time:09/01/2019    Source:sciencedirect.com

We have developed high-pressure photoacoustic calorimetry to determine the volume of reaction for organometallic compounds. This allows the calculation of reaction enthalpies from the photoacoustic data. The photoacoustic signal for chromium hexacarbonyl with acetonitrile in heptane was examined from near ambient pressure to 100 MPa. Two components of the signal were resolved at 10–20 mM acetonitrile. The fast component is attributed to CO displacement by heptane (<10 ns), while the slow component (∼1 μs) is attributed to the subsequent displacement of heptane by acetonitrile. The amplitude of both components were pressure dependent demonstrating that the volumes of each reaction made a significant contribution to the photoacoustic signal (−21 and 17 ml mol−1, respectively). The enthalpies of CO displacement by heptane are 28 kcal mol−1 and heptane displacement by acetonitrile is −22 kcal mol−1. Neglect of the volumes of reaction in the PAC experiments can lead to an error of 6 kcal mol−1.

We also recommend Trading Suppliers and Manufacturers of Chromium hexacarbonyl (cas 13007-92-6). Pls Click Website Link as below: cas 13007-92-6 suppliers

Prev:Plasma enhanced chemical vapor deposition of Cr2O3 thin films using Chromium hexacarbonyl (cas 13007-92-6) (Cr(CO)6) precursor
Next:Surface Science LettersThe adsorption and decomposition of Chromium hexacarbonyl (cas 13007-92-6) on Pd(100))