Presentation Title

Synthesis & Characterization of Heteroatom Catalyst for Selective Ethylene Dimerization

Faculty Mentor

Dr. Phillip Christopher

Start Date

17-11-2018 8:30 AM

End Date

17-11-2018 10:30 AM

Location

HARBESON 28

Session

POSTER 1

Type of Presentation

Poster

Subject Area

engineering_computer_science

Abstract

Propylene (PPYL) is an essential ingredient to fabricating surfactants, synthetic oils, and pharmaceuticals. These materials aid in the creation of a number of day-to-day products like soaps, liquid cleaners, and assist with oil based machinery. However, in recent years the global supply of PPYL has steadily declined as its demand has continuously increased by an average of 4 million metric tons per year (IHS Market, Global Propylene Market). In hopes of creating a novel approach for PPYL production, this research focuses on the creation of a heterogeneous catalyst for ethylene dimerization(ED) reaction. Combination of support acid sites (WO3 and Methyl Phosphonic Acid) and active transition metals (Rh, Ni, Pt) is a highly selective approach to initialize ED, the first step in the production cycle of PPYL. Selective deposition of Rh near WOx acidic sites was achieved using Strong Electric Adsorption method which uses the difference in point of zero charge, characterized by inductive coupled plasma mass spectroscopy. A fingerprint of the catalysts was investigated with the use of Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS), with CO as a probe molecule used to identify metal structure and Pyridine as probe molecule used to identify surface acidity. Future work will focus on analyzing the structure of acid sites nearby catalytic metal compositions on the surface via Raman Spectroscopy. Fundamentally, understanding active site and reaction mechanism will aid in future synthetic approaches for distinct catalyst utilization.

Summary of research results to be presented

Results concluded that all materials with WO3 loaded on Alumina, did show the existence of Bronsted and Lewis acid sites. Though results showed no trends in respect to increasing WO3, it encouraged a further investigation of the WO3 3-D structure and formulated acid sites.

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Nov 17th, 8:30 AM Nov 17th, 10:30 AM

Synthesis & Characterization of Heteroatom Catalyst for Selective Ethylene Dimerization

HARBESON 28

Propylene (PPYL) is an essential ingredient to fabricating surfactants, synthetic oils, and pharmaceuticals. These materials aid in the creation of a number of day-to-day products like soaps, liquid cleaners, and assist with oil based machinery. However, in recent years the global supply of PPYL has steadily declined as its demand has continuously increased by an average of 4 million metric tons per year (IHS Market, Global Propylene Market). In hopes of creating a novel approach for PPYL production, this research focuses on the creation of a heterogeneous catalyst for ethylene dimerization(ED) reaction. Combination of support acid sites (WO3 and Methyl Phosphonic Acid) and active transition metals (Rh, Ni, Pt) is a highly selective approach to initialize ED, the first step in the production cycle of PPYL. Selective deposition of Rh near WOx acidic sites was achieved using Strong Electric Adsorption method which uses the difference in point of zero charge, characterized by inductive coupled plasma mass spectroscopy. A fingerprint of the catalysts was investigated with the use of Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS), with CO as a probe molecule used to identify metal structure and Pyridine as probe molecule used to identify surface acidity. Future work will focus on analyzing the structure of acid sites nearby catalytic metal compositions on the surface via Raman Spectroscopy. Fundamentally, understanding active site and reaction mechanism will aid in future synthetic approaches for distinct catalyst utilization.