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1.
New aspects in the theory of complete hypergroups
Irina Elena Cristea, 2023, objavljeni znanstveni prispevek na konferenci

Ključne besede: complete hypergroup, reversibility, period of an element regularity, reducibility, class equation, commutativity degree, Euler's totient function
Objavljeno v RUNG: 20.06.2023; Ogledov: 2024; Prenosov: 12
.pdf Celotno besedilo (230,09 KB)
Gradivo ima več datotek! Več...

2.
Structural disorder of AlMg-oxide phase supporting Cu/ZnO catalyst improves efficiency and selectivity for ▫$CO_2$▫ hydrogenation to methanol
Andraž Mavrič, Gregor Žerjav, Blaž Belec, Matevž Roškarič, Matjaž Finšgar, Albin Pintar, Matjaž Valant, 2023, izvirni znanstveni članek

Opis: The performance of the Cu/ZnO catalyst system with the AlMg-oxide phase is studied for CO2 hydrogenation to methanol. The catalyst is prepared by thermal treatment of the hydrotalcite phase containing intimately mixed metal cations in the hydroxide form. CuO in the presence of ZnO and disordered AlMg-oxide phase gets easily reduced to Cu during the hydrogenation reaction. Its catalytic activity at relatively low Cu metal content (∼14 at.%) remains stable during 100 hours on stream at 260 °C with constant space-time yield for methanol (∼1.8 gMeOH gcat−1 h−1) and high methanol selectivity (>85 %) The improved performance is attributed to the neutralization of surface acidity, increased number of weak basic sites in the disordered phase, and lower tendency for coke formation.
Ključne besede: carbon dioxide hydrogenation, heterogenous catalysis, methanol, reducibility
Objavljeno v RUNG: 02.06.2023; Ogledov: 1983; Prenosov: 21
.pdf Celotno besedilo (1,12 MB)

3.
New aspects in the theory of complete hypergroups
Irina Elena Cristea, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: hypergroup, complete part, reversibility, reducibility, class equation, commutativity degree
Objavljeno v RUNG: 08.03.2023; Ogledov: 1776; Prenosov: 18
.pdf Celotno besedilo (1,41 MB)

4.
The Reducibility Concept in General Hyperrings
Irina Elena Cristea, Milica Kankaraš, 2021, izvirni znanstveni članek

Ključne besede: general hyperring, reducibility, fundamental relation, equivalence
Objavljeno v RUNG: 25.08.2021; Ogledov: 2551; Prenosov: 49
.pdf Celotno besedilo (302,45 KB)

5.
Some open problems in hypercompositional algebra
Irina Elena Cristea, 2020, objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje)

Ključne besede: hypergroup, hyperring, hyperfield, hypermodule, dependence relation, fundamental realtion, fuzzy reducibility
Objavljeno v RUNG: 23.06.2020; Ogledov: 3889; Prenosov: 0
Gradivo ima več datotek! Več...

6.
Fuzzy reduced hypergroups
Milica Kankaraš, Irina Elena Cristea, 2020, izvirni znanstveni članek

Ključne besede: fuzzy set, reducibility, grade fuzzy set
Objavljeno v RUNG: 17.02.2020; Ogledov: 3641; Prenosov: 101
.pdf Celotno besedilo (263,31 KB)

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