Zobrazeno 1 - 10
of 66
pro vyhledávání: '"J.-Ch. Buhl"'
Autor:
Valeriy Petrov, J.-Ch. Buhl
Publikováno v:
Zeitschrift für anorganische und allgemeine Chemie. 647:1647-1654
Publikováno v:
Clays and Clay Minerals. 67:143-153
The conventional method of zeolite synthesis involves an expensive hydrothermal step whereby a mixture of a metakaolinite, sodium hydroxide, and water is preactivated by thermal treatment between 400°C and 1000°C. The objective of the current study
Autor:
J.-Ch. Buhl
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 236:329-329
Autor:
J.-Ch. Buhl
Publikováno v:
Crystal Research and Technology. 56:2100104
Autor:
J.-Ch. Buhl
Publikováno v:
Advances in Chemical Engineering and Science. :108-124
NaBH4 sodalites were obtained by two new modified methods of crystallization: (1) autothermal synthesis and (2) crystallization with crossover from gel to melt flow in NaOH flux. Syntheses results were presented according to XRD, SEM and FTIR. Beside
Autor:
J.-Ch. Buhl
Publikováno v:
Advances in Chemical Engineering and Science. :277-290
The zeolitic properties of hydrosodalite Na6[AlSiO4]6(H2O)8 and the reactivity and hydrogen content of tetrahydroborate sodalite Na8[AlSiO4]6(BH4)2 favour both species for future industrial applications. A use in chemical process often efforts a samp
Autor:
J.-Ch. Buhl
Publikováno v:
Microporous and Mesoporous Materials. 236:13-20
A new crystallization pathway composed of a combination of gel synthesis and crystallization in a melt flow is demonstrated using the sodalite system as a case study. The specific characteristics of this enhanced method of crystallization persists in
Autor:
J.-Ch. Buhl
Publikováno v:
Microporous and Mesoporous Materials. 222:73-79
The present investigation is a case study of zeolite formation without external heating. The energy of the exothermic reaction of aluminum in aqueous NaOH solution was utilized as the thermal energy source of the whole crystallization process. Zeolit
Publikováno v:
Materials Research Bulletin. 51:389-396
The influence of Ca-formate (C2H2CaO4) on the crystallization of the CSH-phase 11 A tobermorite was investigated under hydrothermal conditions at 200 °C in a wide CaO/SiO2 range of 0.67–1.24. Besides clarifying questions on acceleration or retardi
Autor:
J.-Ch. Buhl, Mousa Gougazeh
Publikováno v:
Clay Minerals. 45:301-314
Kaolin is found in deposits of economic concentration in the Jabal Al-Harad/ Batn El-Ghoul area in southern Jordan. Ten representative kaolin samples were collected from the area and investigated for their mineralogical and chemical composition. Mine