Acta Chemica Malaysia

Journal: Acta Chemica Malaysia (ACMY)
Author:Ohakwere-Eze M.C.
ISSN: 2576-6732
e-ISSN: 2576-6724

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/acmy.01.2023.35.40

Here we demonstrate the separation of gas sand from surrounding shale using Lamé petrophysical parameters; , μ and μ where other rock attribute fails to give such clear distinction. Gather stacks (near and far) were generated to improve fidelity of pre-stack seismic. AVO models were generated then combined and inverted with the Seismic gathers to generate Impedance volumes (Zp and Zs) which were transformed to volumes of the Lamé attributes. Results of this method on the logs and pre-stack seismic gathers show significant improvement in DHI detectability over the conventional analysis based on Vp/Vs or Zp, Zs, variations. The results show that moderate to high values of μρ were indicative of clean sands and lower values of λρ and μ (<1) are indicative of high porosity and therefore high reserves in place, in this case gas. The good correlation of the results of the λρ and μ inversion volumes with those of rock physics analysis observed at the well provided confidence in our interpretation of a prospect away from the well thereby leading to discovery of another potential field in the region.

Journal: Acta Chemica Malaysia (ACMY)
Author:Abdul Hadi Abdullah, Ahmad Zamani Ab Halim, Amri Hj. Mohamed
ISSN: 2576-6732
e-ISSN: 2576-6724

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/acmy.01.2023.23.34

Syngas production using methane dry reforming is a promising method that needs more exploration due to the benefits of harnessing the two most dangerous greenhouse gases, carbon dioxide and methane. The process can also employ biogas as a feed gas, which has a methane-to-carbon dioxide ratio of 1.5. However, due to the highly endothermic nature of the dry reforming reaction, a large quantity of energy is required. It has been demonstrated that the catalyst can be applied to lower the energy barrier and hence lower the reaction temperature. Many researchers have studied catalysts for dry reforming of methane. Coke deposition and active metals sintering are two conditions that can affect catalyst effectiveness. Many studies have claimed that the manipulated variables must be regulated in order to obtain an optimum catalyst for methane dry reforming. The impact of variables on catalyst performance was highlighted and thoroughly examined in this paper. The variables were separated into two groups: catalyst formulation variables and dry reforming reaction operating variables. Furthermore, this paper examined the potential of response surface methodology as techniques for determining the optimal variables with the fewest number of experiments and least expensive. This study also explored the reaction mechanism of dry reforming of methane over catalyst in order to get a better understanding of the essential path that the reaction takes.

Journal: Acta Chemica Malaysia (ACMY)
Author:Hassan Keypour, Jamal Kouhdareh, Sedigheh Alavinia, Mohammad taher Rezaei
ISSN: 2576-6732
e-ISSN: 2576-6724

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/acmy.01.2023.16.22

A Pd(II) Schiff base complex as an efficient and highly heterogeneous catalyst was developed by immobilization of a palladium complex on the surface of modified Fe3O4 magnetite nanoparticles. These surface-modified nanoparticles were characterized using various techniques such asSEM, TEM, XRD, FT-IR, EDX and VSM. The palladium catalyst exhibited efficient catalytic activity in Suzuki-Miura coupling reactions. This method has notable advantages such as excellent chemoselectivity, mild reaction conditions, short reaction times and excellent yields. The yields of the products were in the range 75–85%. Also, the nanocatalyst can be easily recovered with a permanent magnet and reused at least five times without noticeable leaching or loss of its catalytic activity. The products obtained from the coupling reaction were first examined by TLC techniques and after confirmation were identified by FT-IR& NMR techniques.