CARBON DIOXIDE APPARATUS III

Carbon Dioxide Apparatus Iii.’ Another Special Apparatus for the Estimation of Very Minute Quantities of Carbon Dioxide. By

For the purpose of estimating a very small amount of carbon dioxide in general biological problems, two pieces of apparatus have been already described.* The principle of the apparatus is as follows : 1. Exceedingly minute quantities of carbon dioxide can be precipitated as barium carbonate on the surface of a small drop of barium hydroxide solution. 2. When a drop of barium hydroxide is expose...

Carbon dioxide cylinders on anaesthetic apparatus.

Catalytic hydrogenation of carbon dioxide using Ir(III)-pincer complexes.

Catalytic hydrogenation of carbon dioxide in aqueous potassium hydroxide was performed using a newly synthesized isopropyl-substituted PNP-pincer iridium trihydride complex as a catalyst. Potassium formate was obtained with turnover numbers up to 3,500,000 and a turnover frequency of 150,000 h(-1), both of which are the highest values reported to date.

Carbon dioxide reduction and carbon monoxide activation employing a reactive uranium(III) complex.

The highly reactive, six-coordinate tris-aryloxide U(III) species, [((t-BuArO)3tacn)U] (1) reacts with CO2 in a 2e- reduction to produce CO and a dinuclear U(IV/IV) mu-oxygen bridged complex [{((t-BuArO)3tacn)U}2(mu-O)] (2). This reaction proceeds via a dinuclear CO2-bridged intermediate 3. Also, mononuclear 1 was treated with 1 atm of CO to yield dinuclear [{((t-BuArO)3tacn)U}2(mu-CO)] (4) wit...

The Calibration of the Osterhout Respiratory Apparatus for Absolute Quantities of Carbon Dioxide

In the course of a piece of work on the amount of carbon dioxide produced by sea anemones it was found desirable to use the respiratory apparatus devised by Osterhout (1918), and as it was necessary in this work to determine the absolute quantity of carbon dioxide eliminated by these animals, an attempt was made to calibrate this apparatus for such determinations. The method finally adopted see...