Recycled calcium carbonate is an efficient oxidation agent under deep upper mantle conditions

Heterogeneous oxidation of sulfur dioxide on calcium carbonate

L. Li, Z. M. Chen, Y. H. Zhang, T. Zhu, J. L. Li, and J. Ding State Key Joint Laboratory of Environment Simulation and Pollution Control, College of Environmental Sciences, Peking University, Beijing 100871, China Received: 18 October 2005 – Accepted: 9 December 2005 – Published: 17 January 2006 Correspondence to: Y. H. Zhang ([email protected]) © 2006 Author(s). This work is licensed under a ...

AN EXPERIMENTAL INVESTIGATION OF GRAVITY DRAINAGE DURING IMMISCIBLE GAS INJECTION IN CARBONATE ROCKS UNDER RESERVOIR CONDITIONS

Gravity drainage is one of the important recovery mechanisms in fractured carbonate and conventional reservoirs. It occurs due to density difference between the gas in fracture and the oil in matrix as well as in conventional tilted reservoirs. Oil phase will form films which are produced under gravity forces (film flow). Many gas injection experiments have been done on laboratory scales with d...

Laboratory Studies of Rheological Properties of Minerals Under Deep Mantle Conditions

An experimental investigation on drying kinetics of calcium carbonate

Calcium carbonate is a versatile mineral with diverse industrial applications. Drying is a necessary processing step in preparation of calcium carbonate product. Deep knowledge of drying kinetics is required in order to design an appropriate dryer. The main aim of the present study was to investigate the drying kinetics of calcium carbonate, experimentally. Thirteen empirical correlations with ...

Potassium carbonate: a highly efficient catalyst for the acylation of alcohols, phenols and thiols under mild conditions

A general, mild and efficient protocol has been developed for the synthesis of esters and thioesters. The process has been taking place using tetra n-butylammonium iodide (TBAI) as a phase-transfer catalyst and in the presence of potassium carbonate (K2CO3). A wide range of esters and thioesters was prepared in high yields and suitable times by the treatment of alcohols, phenols and thiols with...