Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Promoting effect of high-silica zeolites on a metal-containing alumina matrix (process of hydrodesulphurization of thiophene)
Abstract 1. Metal-containing (Me, Ni, Fe, Mo) boro- and ferrosilicate zeolites without a binder have high initial activities in hydrodesulphurization, similar to the activity of an industrial AlCoMo contact, but lower activities (by a factor of 2–3) in the stable process. 2. In catalysts consisting of γ-Al2O3 and group VI and VIII metal oxides, with low contents of active metals (Ni/Mo = 0·4−0·8) the addition of Ni and Na forms of boro- and ferrosilicates has a promoting effect, increasing stable values of activity by a factor of 2–3 and the apparent effective rate constant byb a factor of 4–7. 3. Introduction of sodium forms of boro- and ferrosilicates into an alumina matrix with a high content of active metals (Ni/Mo = 1·4−1·5) leads to inhibition hydrodesulphurization, reducing significantly (by a factor of 2·5−3) the stable values of activity and the apparent effective rate constant by comparison with the initial composition Al2O3 + NiO + MoO3. 4. The addition of 5–10% promoter (high-silica borosilicate zeolite) is optimum for modyfying the catalytic composition Al2O3 + NiO + MoO3.
Promoting effect of high-silica zeolites on a metal-containing alumina matrix (process of hydrodesulphurization of thiophene)
Abstract 1. Metal-containing (Me, Ni, Fe, Mo) boro- and ferrosilicate zeolites without a binder have high initial activities in hydrodesulphurization, similar to the activity of an industrial AlCoMo contact, but lower activities (by a factor of 2–3) in the stable process. 2. In catalysts consisting of γ-Al2O3 and group VI and VIII metal oxides, with low contents of active metals (Ni/Mo = 0·4−0·8) the addition of Ni and Na forms of boro- and ferrosilicates has a promoting effect, increasing stable values of activity by a factor of 2–3 and the apparent effective rate constant byb a factor of 4–7. 3. Introduction of sodium forms of boro- and ferrosilicates into an alumina matrix with a high content of active metals (Ni/Mo = 1·4−1·5) leads to inhibition hydrodesulphurization, reducing significantly (by a factor of 2·5−3) the stable values of activity and the apparent effective rate constant by comparison with the initial composition Al2O3 + NiO + MoO3. 4. The addition of 5–10% promoter (high-silica borosilicate zeolite) is optimum for modyfying the catalytic composition Al2O3 + NiO + MoO3.
Promoting effect of high-silica zeolites on a metal-containing alumina matrix (process of hydrodesulphurization of thiophene)
Vysotskii, A.V. (Autor:in) / Yaskina, V.A. (Autor:in) / Psavko, B.R. (Autor:in) / Kuimova, N.M. (Autor:in) / Kim Yen Khva (Autor:in) / Konoval'chikov, L.D. (Autor:in) / Polinina, Ye.V. (Autor:in) / Shmidt, F.K. (Autor:in)
21.07.1987
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
A noble Process to Recover Metal Values from Spent Hydrodesulphurization Catalyst
| Taylor & Francis Verlag | 2008
| British Library Online Contents | 2008
| British Library Online Contents | 2014