Marcelo Maciel Pereira

Marcelo Maciel Pereira

Universidade Federal do Rio de Janeiro, Brazil

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


Marcelo Maciel Pereira is an Associate Professor at the Chemistry Institute of Federal University of Rio de Janeiro (UFRJ - Brazil). He obtained the MSc and the Ph.D. in Chemical Engineering at Federal University of Rio de Janeiro. His research interests focus on kinetics and catalysis, hydrocarbons, biomass conversion, zeolites, CO2, greenhouse gas emissions and sequestration.


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,3 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 100oC). This black bio-crude (density around 1.0-1.3 gmL-1  and 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. For instance, a representative ketal-derivative, 1,2:5,6-di-O- isopropylidene-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 Table 1. Moreover,   no   oxygenated   compounds were  observed  in  the  liquid  phase,  thus resulting in a drop-in fraction in the fuel pool. The bio-base economy derived from this concept fits the requirements to be produced, transported and processed like wise to the up- to downstream in the oil industry.  Finally,  as  a  consequence  the bio-crude  behaves  like  hydrocarbons under realistic refinery process, oil could be partially substituted by bio-crude or, in the future; an entirely green refinery could operate using renewable feeds.


Coke cat.


Sel. Ar.

n-C6 conv.











30% DX






Recent Publications

[1]  N.  Batalha,  A.V.d.  Silva,  M.O.d.  Souza,  B.M.C.d. Costa, E.S. Gomes, T.C. Silva, T.G. Barros, M.L.A. Gonçalves, E.B. Caramão, L.R.M.d. Santos, M.B.B. Almeida, R.O.M.A.d. Souza, Y.L. Lam, N.M.F. Carvalho, L.S.M.  Miranda, M.M.  Pereira,  Gasoline from Biomass through Refinery-Friendly Carbohydrate-Based Bio-Oil Produced  by  Ketalization,  CHEMSUSCHEM,  7  (2014) 1627–1636.

[2] R. Garrett, T.G. Barros, M.O. de Souza, B.M.C. da Costa, M.M. Pereira, L.S.M. Miranda, Unveiling the chemical composition of sugar cane biocrudes by liquid chromatography-tandem mass spectrometry, Energy & Fuels, 29 (2015) 8082-8087.

[3] J.A.C. Durange, M.O. de Souza, M.R.L. Santos, M. Nele, E.B. Caramão, N.M.F. Carvalho, M.M. Pereira, Valorization of Sugar Cane Bagasse and Jatropha Curcas Cake: Production of a Biocrude by Acetylation Reaction under Microwave Radiation, Energy & Fuels, 29 (2015) 917–921.

[4] N. Batalha, J. Pinto, H. Ferreira, D.C. Baptista, L.S.M. Miranda,   M.M.   Pereira,   Biohydrocarbons   Production under Standard Refinery Conditions by means of a Representative Ketal Compound of Biocrude, Energy Technology, (2016) DOI: 10.1002/ente.201600313.

Lunch Break 13:15-14:00 @ RBG