Heavy naphtha upgrading by catalytic reforming over novel bi-functional zeolite catalyst

Abstract

Naphtha catalytic reforming process using bimetallic platinum and titanium loaded on nano synthesized HY zeolite was investigated for the product octane number enhancement. The activity of five samples of the prepared catalyst with different bimetallic loading of 0.13, 0.25 wt% Pt and 0.75, 1, 2.2 wt% Ti were investigated for Iraqi heavy naphtha catalytic reforming at the temperature range of 490, 500 and 510 °C and pressure of 10 bar in a packed bed pilot plant reactor. The best result of the research octane number was 84 for reformate product using the sample of 0.13% Pt-0.75% Ti%/HY zeolite at temperature 510 °C and 10 bar achieving 47% increase. All samples of the prepared catalyst showed a good stability during the operation at severe conditions and the maximum carbon content was about 9% due to the deposition of coke precursor on the catalyst surface. The reformate yield was investigated for all catalyst samples under 10 and 20 bars and the same range of temperature and ranged from 89 to 94%. These results are encouraging for future possible replacement of the conventional catalyst by the local synthetic zeolite. Octane number was correlated on the basis of constituent's boiling points. The maximum absolute error between the experimental and predicted octane number was about 3 and 5% using 10 and 20 bar respectively.

Design of New Composites Nano-Catalysts for Naphtha Reforming Process: Experiments and Process Modeling

“…Then the material was cleaned, filtered, and dried before entering the furnace for six hours at 600°C. Then, the Pt/CeY zeolite was mixed with molybdenum carbide and 7 wt.% PVA, 23 wt.% Kaoline, and the rest procedure was the same procedure mentioned above [1].…”

“…Catalytic reforming is considered the refining process that is evolving fast, and numerous studies that have been done on its various aspects, with a particular emphasis on three crucial issues: researching and developing new catalysts with improved activity, selectivity, and deactivation; examining the reforming reaction and disclosing appropriate kinetics as well as deactivation models; and presenting or providing reactor configuration and operation type with improved deactivation. Metal and oxide components are active parts in commercial catalysts, which typically utilize platinum metal distributed over porous promoted alumina or silica-alumina bases [1][2][3]. Numerous possible uses for zeolite with mesoporosity and microporosity include enhanced catalytic activity and stability in numerous catalytic processes [4].…”

Hydrothermal synthesis of zeolite Y from green materials

“…For these particular profiles, a region of mass loss can be identified between approximately 100 C-400 C. This mass loss comprises desorption of water unbound to the zeolitic structure due to the absence of organic material. [102] Figure 6 demonstrates the nitrogen adsorptiondesorption isotherms for zeolite Y samples with the different SARs. The results of this experiment indicate a slight increase in relative pressure (p/p 0 ) from 0.01-0.99.…”

Sustainable development and enhancement of cracking processes using metallic composites

“…This can be realized by developing more active or selective catalysts for the hydrotreatment (HDT) processes [63]. The core of the reforming process is the catalyst and most of the notable improvement in the process was attributed to the development of improved catalyst [64]. A specific catalyst used for the conventional hydrotreatment of crude oil includes shaped alumina-supported sulphided Mo promoted by either Co or Ni [65].…”