MULTICARBON ELECTROSYNTHESIS & HYBRID CARBON BIOREFINERIES AT THE LIMIT C-C Coupling, Ethylene, Ethanol, Acetate, Propanol, Butanol, Product Concentration, Electro-Biological Manufacturing, and Carbon-Chain Growth

Abstract

MULTICARBON ELECTROSYNTHESIS & HYBRID CARBON BIOREFINERIES AT THE LIMITC-C Coupling, Ethylene, Ethanol, Acetate, Propanol, Butanol, Product Concentration, Electro-Biological Manufacturing, and Carbon-Chain Growth Feng Cheng-en (33) x Starli When does growing a carbon chain create more system value than catalytic complexity and separation burden destroy? MULTICARBON ELECTROSYNTHESIS & HYBRID CARBON BIOREFINERIES AT THE LIMIT is a flagship research monograph that expands the multicarbon family of the CO2 Energy White-Hole mother system into a full-scale research architecture. The book begins with direct carbon-carbon coupling but refuses to treat longer molecules as automatic progress. It asks when ethylene, ethanol, acetate, propanol, butanol, and hybrid electro-biological routes remain valuable after carbon yield, product concentration, separation energy, catalyst dynamics, biological burden, durability, and scale are counted. Its flagship Three-Coupling is: C-C Coupling x Product Concentration x Platform Flexibility The Multicarbon System Index (MCSI) is introduced as a book-defined research heuristic linking C-C coupling selectivity, product concentration, platform flexibility, and carbon yield while explicitly penalizing product multiplicity, separation energy, and catalyst degradation. MCSI is not a natural law, industrial standard, investment score, or certification metric. Across 82 chapters, the volume develops C-C coupling physics, copper catalyst dynamics, local reaction environments, gas-diffusion architectures, ethylene, ethanol, acetate, propanol, butanol, C3+ chain growth, product concentration, gas and liquid separation, hybrid electro-biological manufacturing, acetate-fed bioprocessing, carbon flux, nutrient burdens, contamination control, long-duration durability, intermittent-power operation, modular biorefineries, techno-economics, lifecycle accounting, benchmarking, safety, failure science, and successor handoff. Every chapter begins with a Three-Coupling system, a named Core Relation, and an artistic geometric research model. The geometric grammar includes the Carbon-Chain Growth Helix, C-C Coupling Landscape, Product-Selectivity Simplex, Electro-Biological Bridge, Separation-Burden Funnel, Multicarbon Refinery Network, Carbon-Yield Value Corridor, Hybrid Manufacturing Lattice, Durability-Complexity Basin, and Platform Portfolio Constellation. The volume contains 200 Research Gates and 33 Answer Embryos. Each Research Gate is designed as a falsifiable research entrance spanning mechanisms, catalyst states, product concentration, separations, direct and hybrid routes, carbon yield, biological conversion, dynamic operation, durability, benchmarking, scale-up, failure science, and successor reconstruction. The 33 Answer Embryos remain deliberately provisional and may strengthen, weaken, split, or be abandoned as integrated evidence accumulates. The central distinction is simple: Longer carbon chains do not automatically create higher system value. Carbon-chain growth is justified only when added molecular value, downstream flexibility, and transport or product utility exceed the catalytic, separation, durability, biological, and operational burdens required to create it. This is therefore not only a book about making C2+ products. It is a book about deciding where carbon-chain growth should stop.