Leandro Soter de Mariz e Miranda

Leandro Soter de Mariz e Miranda

UFRJ, Brazil

Title: Making a bridge between biomass and hydrocarbon in a standard refinery


I Graduated in Pharmacy in 2001 and obtained my PhD in 2007 working on the synthesis of natural products. After obtaining my PhD I moved to the Pharmochemical Industry to work on the P&D department in nucleoside chemistry, searching for new synthetic strategies for the synthesis of clinically important nucleosides. In 2011 I Joined the Federal University of Rio de Janeiro and an assistant Professor. In 2011 I went to the University Of Cergy-Pontoise, France, as an Invited Professor to work on Nucleosides against HCV. My research interests are Biocatalysis, Nucleoside and Carbohydrate Chemistry. In 2012 the interest on carbohydrate chemistry led me to work with Lignocellulosic Biomass, in a project with the aim to transform it, in order to allow its introduction into the FCC Unit for the synthesis of green hydrocarbons.


A conventional refinery is based on mature processes that obtain standard products from a large variety of non- renewable feeds. Despite enormous benefits to modern civilization, the adopted production and consumption patterns paradoxically put us at environmental risk. Therefore it is mandatory a paradigm shift to decrease the carbon footprint without reducing the energy access to people. Biomass is composed of functionalized biopolymers (lignin-cellulose) based on sugars- and phenol-derivatives. On the other hand, refinery processes have been designed to operate on poorly reactive compounds like hydrocarbons. The bridge between these two remarkable worlds was archived in two steps: 1- by transforming the biomass into a bio-crude, which was produced by ketalyzation in acetone [1, 2] and acetylation reactions in acetic anhydride [3] under mild temperature conditions (around 1000C). This black bio-crude (density 1.0-1.3 gmL-1 and Typical CHO composition of 60, 8 and 32 respectively) is chemically distinct of any other bio-feed so far. 2- -The transformation of bio-crude and model compounds by the fluid catalytic cracking and hydrotreatment into monoaromatic and saturated hydrocarbons respectively [4]. Herein the results of the fluidized bed pilot plant in laboratory scale of both model test and bio-crude are presented. A representative ketal- derivative,1,2:5,6-di-O-isopropyliden-α-D-glucofuranose (DX) mixture up to 50% in n-hexane achieved three main goals: small coke formation, remarkable selectivity to hydrocarbons and slight improvement in n-hexane conversion as presented in Table1. Moreover, no oxygenated compounds were observed in the liquid phase, thus resulting in a drop-in fraction in the fuel pool.