Di Wu
Di Wu is an electrical engineer at PNNL, serving the optimization and control group as chief engineer and team lead.
Naveen Karri
Stephen Callister
Michael Wilhelm
CATALYST AND METHOD EMBODIMENTS FOR MAKING PARA-XYLENE AND ORTHO-XYLENE (iEdison No. 0685901-20-0047)
We have developed a chemistry to generate p-xylene from ethanol. Theinnovation involves the conversion of ethanol derived acetaldehyde to p-methylbenzaldehyde overmixed oxide catalyst followed by the conversion to p-xylene via hydrogenolysis (ethanol →acetaldehyde → p-methyl benzaldehyde → p-xylene). Among aromatics, the production distributioncontains only p-xylene, o-xylene and benzene. Typical p-xylene synthesis (both conventional andrenewable) process contains range of aromatics (e.g. benzene, toluene, o-xylene, ethyl benzene, mxylene,p-xylene etc.) that needs to be purified via the expensive separation process.The simple aromatic stream provides to major advantages over the conventional and other renewabletechnologies.1) The aromatic mixture to p-xylene separation/purification steps become simpler and cheaper2) Enables to build a modular plant to meet the local renewable feedstock availability and reduces thefeedstock transportation cost
METHOD AND SYSTEM EMBODIMENTS FOR CONVERTING ETHANOL TO PARA-XYLENE AND ORTHO-XYLENE (iEdison No. 0685901-19-0012)
In collaboration with LanzaTech we have developed a chemistry to generate p-xylene from ethanol. The innovation involves the conversion of ethanol derived acetaldehyde to p-methylbenzaldehyde over mixed oxide catalyst followed by the conversion to p-xylene via hydrogenolysis (ethanol → acetaldehyde → p-methyl benzaldehyde → p-xylene). Among aromatics, the production distribution contains only p-xylene, o-xylene and benzene. Typical p-xylene synthesis (both conventional and renewable) process contains range of aromatics (e.g. benzene, toluene, o-xylene, ethyl benzene, m-xylene, p-xylene etc.) that needs to be purified via the expensive separation process. The simple aromatic stream provides to major advantages over the conventional and other renewable technologies. 1) The aromatic mixture to p-xylene separation/purification steps become simpler and cheaper 2) Enables to build a modular plant to meet the local renewable feedstock availability and reduces the feedstock transportation cost
METHOD AND SYSTEM EMBODIMENTS FOR CONVERTING ETHANOL TO PARA-XYLENE AND ORTHO-XYLENE (iEdison No. 0685901-19-0012)
In collaboration with LanzaTech we have developed a chemistry to generate p-xylene from ethanol. The innovation involves the conversion of ethanol derived acetaldehyde to p-methylbenzaldehyde over mixed oxide catalyst followed by the conversion to p-xylene via hydrogenolysis (ethanol → acetaldehyde → p-methyl benzaldehyde → p-xylene). Among aromatics, the production distribution contains only p-xylene, o-xylene and benzene. Typical p-xylene synthesis (both conventional and renewable) process contains range of aromatics (e.g. benzene, toluene, o-xylene, ethyl benzene, m-xylene, p-xylene etc.) that needs to be purified via the expensive separation process. The simple aromatic stream provides to major advantages over the conventional and other renewable technologies. 1) The aromatic mixture to p-xylene separation/purification steps become simpler and cheaper 2) Enables to build a modular plant to meet the local renewable feedstock availability and reduces the feedstock transportation cost
METHOD AND SYSTEM EMBODIMENTS FOR CONVERTING ETHANOL TO PARA-XYLENE AND ORTHO-XYLENE (iEdison No. 0685901-19-0012)
In collaboration with LanzaTech we have developed a chemistry to generate p-xylene from ethanol. The innovation involves the conversion of ethanol derived acetaldehyde to p-methylbenzaldehyde over mixed oxide catalyst followed by the conversion to p-xylene via hydrogenolysis (ethanol → acetaldehyde → p-methyl benzaldehyde → p-xylene). Among aromatics, the production distribution contains only p-xylene, o-xylene and benzene. Typical p-xylene synthesis (both conventional and renewable) process contains range of aromatics (e.g. benzene, toluene, o-xylene, ethyl benzene, m-xylene, p-xylene etc.) that needs to be purified via the expensive separation process. The simple aromatic stream provides to major advantages over the conventional and other renewable technologies. 1) The aromatic mixture to p-xylene separation/purification steps become simpler and cheaper 2) Enables to build a modular plant to meet the local renewable feedstock availability and reduces the feedstock transportation cost