Interaction of water with the surface of calcite.
スポンサーリンク
概要
- 論文の詳細を見る
The interaction of water with the surface of ground calcite was investigated by measuring the water adsorption isotherm and the amount of thermally desorbed molecules <I>in vacuo</I>. The results showed that the surface of ground calcite has chemisorbed water at room temperature which can be completely desorbed by evacuation up to 600 °C, and on which water can be physisorbed in a H<SUB>2</SUB>O:OH ratio between 1:2 and 1:1, depending on the conditions of the pretreatment. The isosteric heat of the physisorption of water on the hydroxyls showed that the activity of the adsorption sites for water is reduced by treating the sample at higher temperatures or by washing with water. Moreover, it was found that the surface of the calcite sample starts to release CO<SUB>2</SUB> molecules by heat treatment at relatively low temperatures below 300 °C <I>in vacuo</I>, and that the amount of CO<SUB>2</SUB> increases exponentially with an increase in the temperature.
- 公益社団法人 日本化学会の論文
著者
-
Morimoto Tetsuo
Department Of Biomechanical Systems Ehime University
-
Okada Osamu
Department Of Cardiovascular Surgery Gunma Cardio-vascular Hospital
-
Kadota Toshie
Department of Chemistry, Faculty of Science, Okayama University
-
Kishi Jiro
Research Center for Industry in Okayama Prefecture
関連論文
- Incidence and Clinical Characteristics of Chronic Pulmonary Thromboembolism in Japan Compared With Acute Pulmonary Thromboembolism : Results of a Multicenter Registry of the Japanese Society of Pulmonary Embolism Research
- Speaking Plant/Fruit Approach for Greenhouses and Plant Factories
- A Case of Multiple Subungual Glomus Tumors Associated with Neurofibromatosis Type 1
- EXAFS Studies on Y_Ba_xCuO_Superconductors
- Arterial and Mixed Venous Oxygen Desaturation during Incremental Exercise in Patients with Chronic Pulmonary Disease
- Study on Annular Mist Flow in Pipe : 2nd Report, Behavior of Watet Film in the Non-equilibrium Region of Downward Annular Mist Flow with Low Water Flow Rate
- A Case of Otomycosis Caused by Aspergillus sclerotiorum
- NMR and NQR Studies on Local Electronic and Magnetic Properties of Various Cuprates : II-C Neutron Scattering, NMR and NQR and Ultrasonics : II Oxide Superconductors; Experiments II : Electronic States
- Weeding techniques in transplanted and direct wet-seeded rice in Pakistan
- Dynamic Optimization of Watering in Satsuma Mandarin using Neural Networks and Genetic Algorithms
- The Model for Non-Destructive Measurement of Tomato Leaf Area
- A Heat Stress Application Technique for Reducing Water Loss of Fruits during Storage
- Fundamental Research for Intelligent Control in Cultivating and Storage Systems
- スピーキングプラントアプローチに基づく知能的制御法を利用した栽培及び貯蔵プロセスの動的最適化
- Recent Developments in Diagnostic Imaging Techniques and Management for Acute Pulmonary Embolism : Multicenter Registry by The Japanese Society of Pulmonary Embolism Research
- Study on Annular Mist Flow in Pipe : 1st Report, Investigation of the Non-equilibrium Length and Changes of Some Factors in the Non-equilibrium Region
- A Strong Axial Crystal Field of Mn^ in Pyrite Phase MgTe_2
- ESR of Mn^ in Pyrite Phase ZnS_2
- Magnetic Susceptibility of MnTe_2 with Pyrite Structure
- Ascending to Descending Aorta Bypass for Middle Aortic Syndrome
- Disseminated Superficial Porokeratosis with Dermal Amyloid Deposition
- Zero Energy Cool Chamber for Extending the Shelf-Life of Tomato and Eggplant
- Asymmetric adsorption of alanine by quartz powder from ethanol solution.
- Understanding Perceptions Regarding Availability, Quality, Status and Methods Used in Storing Fruits and Vegetables in Pakistan′s Dera Ismail Khan District
- SURVEY ON NUTRITIONAL STATUS OF SCHOOL CHILDREN AFTER THE FLOOD IN CENTRAL KYUSHU, May 26 1953
- Surface nonstoichiometry and isoelectric point of manganese oxide.
- The hydrothermal activation of silica-alumina for butene isomerization. A device to prepare a standard sample.
- Spherical particles and their surface properties. I. Interaction of water with the surface of spherical silica.
- The thermal desorption of surface hydroxyls on tin(IV) oxide.
- Spherical particles and their surface properties. III. Formation of spherical particles of metal oxides by O2-H2 flame fusion.
- Isoelectric Point of Manganese Oxide
- Heat of ion exchange reaction as determined by means of flow micro-calorimetry. I. Cation exchange in aqeous system.
- Surface Water Content of Metal Oxides. II. Measurement of Samples Containing Pores: Silica, Alumina and Silica-Alumina
- The Heat of Adsorption from Solution. I. The Heat of Adsorption of Benzene on Silica Gel from the Benzene-Cyclohexane Solution
- Interaction of water with the surface of calcite.