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expected that the incorporation of Al 2 O 3 , an oxide with acidic characteristics, into the TiO 2 would lead to an increase in the ethylene selectivity, favoring the dehydration of ethanol. It is well known that the basic and acidic properties of the
from 50 to 800 °C at a heating rate of 10 °C/min. The desorbed products were monitored by TCD and MS equipment simultaneously. Acid properties were determined by ammonia temperature-programmed desorption (NH 3 -TPD) in a Micromeritics AutoChem
linear CO adsorbed species appears at 2,080 cm −1 . A linear correlation was found between the surface of the adsorbance peak corresponding to CO and C Pt , the concentration of accessible Pt atoms [ 25 ]. With both samples, the acidic
, the acidic property of sepiolite along with metallic sites can simultaneously be employed to carry out bifunctional catalysis. A large variety of benzimidazoles are reported to exhibit antifungal [ 10 ], chemotherapeutic [ 11 ], antihelmintic
, Fernandes , VJ , Verissimo , AS . Acid properties of SiMCM-41 mesoporous molecular sieve . J Therm Anal Calorim . 2000 ; 59 : 649 – 655 . 10.1023/A:1010124914425 . 24. Vyazovkin , S
geospatial data [ 2 ]. The management and analysis of GIS data are traditionally done using Relational DataBase Management Systems (RDBMS) due to their strong data consistency, transactional support, and Atomicity, Consistency, Isolation, and Durability (ACID
⊘nsted acidic sites [ 10 , 33 , 37 ] as shown in Fig. 6 . The silica gel without AlCl 3 vapor treatment has not shown any significant bands, indicates that silica gel does not possess Br⊘nsted or Lewis acidic properties. Fig. 6
samples possess supper acid [ 10 ]. So, the asymmetric stretching frequency of the S=O bonds are related to the acidic properties [ 19 ], which is the reason for high catalytic activities of S 2 O 8 2− /Al- x wt%Ce–Zn–O. Fig. 3
(lattice ion s O 2− ), and leads to nondestructive oxidation products. The formation of significant amounts of acetaldehyde, which is a product of propene oxidation involving the rupture of double bond of the olefin, is possible due to the acid properties
and resonances [ 2 , 5 ]. FOX-7 is a representative “push–pull” nitro-enamine compound, presents certain acidic properties and can react with some nucleophiles to synthesize new high-energy derivatives [ 2 , 5 , 7 ]. Our interest mainly consisted in
