K
Károly Lázár
Researcher at Hungarian Academy of Sciences
Publications - 184
Citations - 2847
Károly Lázár is an academic researcher from Hungarian Academy of Sciences. The author has contributed to research in topics: Catalysis & Mesoporous material. The author has an hindex of 29, co-authored 181 publications receiving 2678 citations. Previous affiliations of Károly Lázár include National Chemical Laboratory & Indian Institute of Chemical Technology.
Papers
More filters
Journal ArticleDOI
Synthesis, Characterization, and Catalytic Properties of Mesoporous Tin-Containing Analogs of MCM-41☆
TL;DR: In this paper, stannosilicate molecular sieves with the MCM-41 structure have been synthesized by hydrothermal methods and characterized by elemental analysis, XRD, N{sub 2} adsorption measurements, and UV-visible, IR, C CP/MAS NMR, Si MAS NMR and Moessbauer spectroscopic methods.
Journal ArticleDOI
Synthesis and characterization of tin oxide-modified mesoporous SBA-15 molecular sieves and catalytic activity in trans-esterification reaction
TL;DR: In this article, a mesoporous silica molecular sieve SBA-15 has been synthesized and incorporated with various amounts of tin via incipient-wetness impregnation using tin chloride in ethanol followed by calcination.
Journal ArticleDOI
Direct hydrothermal synthesis of mesoporous Sn-SBA-15 materials under weak acidic conditions
TL;DR: In this paper, a direct synthetic route for the preparation of Sn-SBA-15 materials with nSi/nSn ratios ranging from 100 to 10 under milder acidic conditions than normally employed for the pre-processing of Si-Saba-15 is reported.
Journal ArticleDOI
Heat-treatment of isomorphously substituted ZSM-5 (MFI) zeolites: An ESR and Mössbauer spectroscopy and kinetic study
TL;DR: In this paper, the authors proposed that if the temperature of the heat treatment (HT) is raised, type II and III sites will be annihilated with preference, under concomitant production of amorphous Fe 2 O 3 possessing molecular dispersity.
Journal ArticleDOI
Characterisation and activity in n-hexane rearrangement reactions of metallic phases on Pt-Sn/Al2O3 catalysts of different preparations
TL;DR: In this paper, the platinum-tin interactions in Pt-Al2O3 catalysts were followed through several characterisation methods and modified by using two preparation procedures (1.5 wt% Pt, Sn:Pt=1:1): conventional co-impregnation with H2PtCl6 and SnCl4 (T sample) or by use of the bimetallic precursor [Pt(NH3)4]SnCl6, which was synthesised in the support porosity (N sample).